{"id":"CVE-2026-27459","state":"PUBLISHED","title":"pyOpenSSL DTLS cookie callback buffer overflow","description":"pyOpenSSL is a Python wrapper around the OpenSSL library. Starting in version 22.0.0 and prior to version 26.0.0, if a user provided callback to `set_cookie_generate_callback` returned a cookie value greater than 256 bytes, pyOpenSSL would overflow an OpenSSL provided buffer. Starting in version 26.0.0, cookie values that are too long are now rejected.","publishedAt":"2026-03-17T23:34:28.483Z","updatedAt":"2026-09-11T12:09:00.415Z","severity":{"score":7.2,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U","source":"GitHub_M"},"assigner":"GitHub_M","products":["pyca pyopenssl"],"affected":[{"vendor":"pyca","product":"pyopenssl","versions":[{"version":">= 22.0.0, < 26.0.0","status":"affected"}]}],"references":["https://github.com/pyca/pyopenssl/security/advisories/GHSA-5pwr-322w-8jr4","https://github.com/pyca/pyopenssl/commit/57f09bb4bb051d3bc2a1abd36e9525313d5cd408","https://github.com/pyca/pyopenssl/blob/358cbf29c4e364c59930e53a270116249581eaa3/CHANGELOG.rst","https://access.redhat.com/security/cve/CVE-2026-27459","https://bugzilla.redhat.com/show_bug.cgi?id=2448503","https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-27459.json","https://access.redhat.com/errata/RHSA-2026:13512","https://access.redhat.com/errata/RHSA-2026:10754","https://access.redhat.com/errata/RHSA-2026:14874","https://access.redhat.com/errata/RHSA-2026:13508","https://access.redhat.com/errata/RHSA-2026:14873","https://access.redhat.com/errata/RHSA-2026:14835","https://access.redhat.com/errata/RHSA-2026:13553","https://access.redhat.com/errata/RHSA-2026:13545","https://access.redhat.com/errata/RHSA-2026:59153","https://access.redhat.com/errata/RHSA-2026:48758","https://access.redhat.com/errata/RHSA-2026:7224","https://access.redhat.com/errata/RHSA-2026:11916","https://access.redhat.com/errata/RHSA-2026:11856","https://access.redhat.com/errata/RHSA-2026:21017","https://access.redhat.com/errata/RHSA-2026:24853","https://access.redhat.com/errata/RHSA-2026:19375","https://access.redhat.com/errata/RHSA-2026:22465","https://access.redhat.com/errata/RHSA-2026:48085","https://access.redhat.com/errata/RHSA-2026:11996","https://access.redhat.com/errata/RHSA-2026:8437"],"weaknesses":["CWE-120"],"ingestedAt":"2026-10-29T20:11:31.369Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/27xxx/CVE-2026-27459.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-27459","state":"PUBLISHED","datePublished":"2026-03-17T23:34:28.483Z","dateUpdated":"2026-09-11T12:09:00.415Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-02-19T17:25:31.100Z"},"containers":{"cna":{"title":"pyOpenSSL DTLS cookie callback buffer overflow","descriptions":[{"lang":"en","value":"pyOpenSSL is a Python wrapper around the OpenSSL library. Starting in version 22.0.0 and prior to version 26.0.0, if a user provided callback to `set_cookie_generate_callback` returned a cookie value greater than 256 bytes, pyOpenSSL would overflow an OpenSSL provided buffer. Starting in version 26.0.0, cookie values that are too long are now rejected."}],"affected":[{"vendor":"pyca","product":"pyopenssl","versions":[{"version":">= 22.0.0, < 26.0.0","status":"affected"}]}],"references":[{"url":"https://github.com/pyca/pyopenssl/security/advisories/GHSA-5pwr-322w-8jr4","name":"https://github.com/pyca/pyopenssl/security/advisories/GHSA-5pwr-322w-8jr4","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/pyca/pyopenssl/commit/57f09bb4bb051d3bc2a1abd36e9525313d5cd408","name":"https://github.com/pyca/pyopenssl/commit/57f09bb4bb051d3bc2a1abd36e9525313d5cd408","tags":["x_refsource_MISC"]},{"url":"https://github.com/pyca/pyopenssl/blob/358cbf29c4e364c59930e53a270116249581eaa3/CHANGELOG.rst","name":"https://github.com/pyca/pyopenssl/blob/358cbf29c4e364c59930e53a270116249581eaa3/CHANGELOG.rst","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"HIGH","attackRequirements":"PRESENT","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":7.2,"baseSeverity":"HIGH","vectorString":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U","version":"4.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-120","lang":"en","description":"CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-03-17T23:34:28.483Z"},"source":{"advisory":"GHSA-5pwr-322w-8jr4","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-03-18T19:52:08.536876Z","id":"CVE-2026-27459","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-03-18T19:52:15.812Z"}},{"title":"pyOpenSSL: DTLS cookie callback buffer overflow","descriptions":[{"lang":"en","value":"A flaw was found in pyOpenSSL. The set_cookie_generate_callback callback function can be used to generate DTLS cookies. When the callback returns a cookie string or byte sequence longer than 256 bytes, a buffer overflow can be triggered due to a missing bounds checking before copying the data to a fixed-size buffer provided by the underlying OpenSSL library."}],"affected":[{"vendor":"Red Hat","product":"Red Hat Ansible Automation Platform 2.5 for RHEL 8","packageName":"python3.12-pyOpenSSL","defaultStatus":"affected","versions":[{"version":"0:26.0.0-1.el8ap","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:ansible_automation_platform:2.5::el8"]},{"vendor":"Red Hat","product":"Red Hat Ansible Automation Platform 2.5 for RHEL 9","packageName":"python3.12-pyOpenSSL","defaultStatus":"affected","versions":[{"version":"0:26.0.0-1.el9ap","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:ansible_automation_platform:2.5::el9"]},{"vendor":"Red Hat","product":"Red Hat Ansible Automation Platform 2.6 for RHEL 9","packageName":"automation-controller","defaultStatus":"affected","versions":[{"version":"0:4.7.11-2.el9ap","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:ansible_automation_platform:2.6::el9"]},{"vendor":"Red Hat","product":"Red Hat Ansible Automation Platform 2.6 for RHEL 9","packageName":"python3.12-pyOpenSSL","defaultStatus":"affected","versions":[{"version":"0:26.0.0-1.el9ap","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:ansible_automation_platform:2.6::el9"]},{"vendor":"Red Hat","product":"Red Hat Satellite 6.16 for RHEL 8","packageName":"python-pyOpenSSL","defaultStatus":"affected","versions":[{"version":"0:24.1.0-2.el8pc","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:satellite:6.16::el8","cpe:/a:redhat:satellite_capsule:6.16::el8"]},{"vendor":"Red Hat","product":"Red Hat Satellite 6.16 for RHEL 9","packageName":"python-pyOpenSSL","defaultStatus":"affected","versions":[{"version":"0:24.1.0-2.el9pc","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:satellite:6.16::el9","cpe:/a:redhat:satellite_capsule:6.16::el9"]},{"vendor":"Red Hat","product":"Red Hat Satellite 6.17 for RHEL 9","packageName":"python-pyOpenSSL","defaultStatus":"affected","versions":[{"version":"0:25.1.0-0.3.el9pc","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:satellite:6.17::el9","cpe:/a:redhat:satellite_capsule:6.17::el9"]},{"vendor":"Red Hat","product":"Red Hat Satellite 6.18 for RHEL 9","packageName":"python3.12-pyOpenSSL","defaultStatus":"affected","versions":[{"version":"0:26.0.0-2.el9pc","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:satellite:6.18::el9","cpe:/a:redhat:satellite_capsule:6.18::el9"]},{"vendor":"Red Hat","product":"RHUI 4 for RHEL 8","packageName":"python-pyOpenSSL","defaultStatus":"affected","versions":[{"version":"0:24.1.0-2.el8ui","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:rhui:4::el8"]},{"vendor":"Red Hat","product":"Red Hat Ansible Automation Platform 2.5","packageName":"ansible-automation-platform-25/ee-supported-rhel8","defaultStatus":"affected","versions":[{"version":"1777398315","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://catalog.redhat.com/software/containers/","cpes":["cpe:/a:redhat:ansible_automation_platform:2.5::el8"]},{"vendor":"Red Hat","product":"Red Hat Ansible Automation Platform 2.5","packageName":"ansible-automation-platform-25/lightspeed-rhel8","defaultStatus":"affected","versions":[{"version":"1777403872","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://catalog.redhat.com/software/containers/","cpes":["cpe:/a:redhat:ansible_automation_platform:2.5::el8"]},{"vendor":"Red Hat","product":"Red Hat Ansible Automation Platform 2.6","packageName":"ansible-automation-platform-26/ansible-dev-tools-rhel9","defaultStatus":"affected","versions":[{"version":"1777390240","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://catalog.redhat.com/software/containers/","cpes":["cpe:/a:redhat:ansible_automation_platform:2.6::el9"]},{"vendor":"Red Hat","product":"Red Hat Ansible Automation Platform 2.6","packageName":"ansible-automation-platform-26/eda-controller-rhel9","defaultStatus":"affected","versions":[{"version":"1777296732","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://catalog.redhat.com/software/containers/","cpes":["cpe:/a:redhat:ansible_automation_platform:2.6::el9"]},{"vendor":"Red Hat","product":"Red Hat Ansible Automation Platform 2.6","packageName":"ansible-automation-platform-26/ee-supported-rhel9","defaultStatus":"affected","versions":[{"version":"1777391447","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://catalog.redhat.com/software/containers/","cpes":["cpe:/a:redhat:ansible_automation_platform:2.6::el9"]},{"vendor":"Red Hat","product":"Red Hat Ansible Automation Platform 2.6","packageName":"ansible-automation-platform-26/hub-rhel9","defaultStatus":"affected","versions":[{"version":"1777299023","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://catalog.redhat.com/software/containers/","cpes":["cpe:/a:redhat:ansible_automation_platform:2.6::el9"]},{"vendor":"Red Hat","product":"Red Hat Ansible Automation Platform 2.6","packageName":"ansible-automation-platform-26/lightspeed-rhel9","defaultStatus":"affected","versions":[{"version":"1777387242","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://catalog.redhat.com/software/containers/","cpes":["cpe:/a:redhat:ansible_automation_platform:2.6::el9"]},{"vendor":"Red Hat","product":"Red Hat Ansible Automation Platform 2.6","packageName":"ansible-automation-platform-26/platform-resource-runner-rhel9","defaultStatus":"affected","versions":[{"version":"1777390333","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://catalog.redhat.com/software/containers/","cpes":["cpe:/a:redhat:ansible_automation_platform:2.6::el9"]},{"vendor":"Red Hat","product":"Red Hat Ansible Automation Platform 2.7","packageName":"ansible-automation-platform-27/ee-supported-rhel9","defaultStatus":"affected","versions":[{"version":"1787235693","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://catalog.redhat.com/software/containers/","cpes":["cpe:/a:redhat:ansible_automation_platform:2.7::el9"]},{"vendor":"Red Hat","product":"Red Hat Ansible Automation Platform 2.7","packageName":"ansible-automation-platform-27/lightspeed-rhel9","defaultStatus":"affected","versions":[{"version":"1787217531","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://catalog.redhat.com/software/containers/","cpes":["cpe:/a:redhat:ansible_automation_platform:2.7::el9"]},{"vendor":"Red Hat","product":"Red Hat Hardened Images","packageName":"jaeger-main","defaultStatus":"affected","versions":[{"version":"2.20.0-0.8.hum1","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:hummingbird:1"]},{"vendor":"Red Hat","product":"Red Hat Hardened Images","packageName":"pyopenssl-main","defaultStatus":"affected","versions":[{"version":"26.0.0-1.1.hum1","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:hummingbird:1"]},{"vendor":"Red Hat","product":"Red Hat Quay 3.10","packageName":"quay/quay-rhel8","defaultStatus":"affected","versions":[{"version":"1776736910","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://catalog.redhat.com/software/containers/","cpes":["cpe:/a:redhat:quay:3.10::el8"]},{"vendor":"Red Hat","product":"Red Hat Quay 3.12","packageName":"quay/quay-rhel8","defaultStatus":"affected","versions":[{"version":"1776752646","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://catalog.redhat.com/software/containers/","cpes":["cpe:/a:redhat:quay:3.12::el8"]},{"vendor":"Red Hat","product":"Red Hat Quay 3.14","packageName":"quay/quay-rhel8","defaultStatus":"affected","versions":[{"version":"1779689392","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://catalog.redhat.com/software/containers/","cpes":["cpe:/a:redhat:quay:3.14::el8"]},{"vendor":"Red Hat","product":"Red Hat Quay 3.15","packageName":"quay/quay-rhel8","defaultStatus":"affected","versions":[{"version":"1780891395","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://catalog.redhat.com/software/containers/","cpes":["cpe:/a:redhat:quay:3.15::el8"]},{"vendor":"Red Hat","product":"Red Hat Quay 3.16","packageName":"quay/quay-rhel9","defaultStatus":"affected","versions":[{"version":"1779204086","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://catalog.redhat.com/software/containers/","cpes":["cpe:/a:redhat:quay:3.16::el9"]},{"vendor":"Red Hat","product":"Red Hat Quay 3.17","packageName":"quay/quay-rhel9","defaultStatus":"affected","versions":[{"version":"1779922205","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://catalog.redhat.com/software/containers/","cpes":["cpe:/a:redhat:quay:3.17::el9"]},{"vendor":"Red Hat","product":"Red Hat Quay 3.18","packageName":"quay/quay-rhel9","defaultStatus":"affected","versions":[{"version":"1784987273","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://catalog.redhat.com/software/containers/","cpes":["cpe:/a:redhat:quay:3.18::el9"]},{"vendor":"Red Hat","product":"Red Hat Quay 3.9","packageName":"quay/quay-rhel8","defaultStatus":"affected","versions":[{"version":"1776782369","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://catalog.redhat.com/software/containers/","cpes":["cpe:/a:redhat:quay:3.9::el8"]},{"vendor":"Red Hat","product":"Red Hat Trusted Artifact Signer 1.4","packageName":"rhtas/model-transparency-rhel9","defaultStatus":"affected","versions":[{"version":"1775815407","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://catalog.redhat.com/software/containers/","cpes":["cpe:/a:redhat:trusted_artifact_signer:1.4::el9"]},{"vendor":"Red Hat","product":"Confidential Compute Attestation","packageName":"openshift-sandboxed-containers/osc-podvm-builder-rhel9","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:confidential_compute_attestation:1"]},{"vendor":"Red Hat","product":"Exploit Intelligence","packageName":"exploit-intelligence-tech-preview/vulnerability-analysis-rhel9","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:exploit_intelligence:0"]},{"vendor":"Red Hat","product":"Lightspeed Core","packageName":"lightspeed-core/lightspeed-stack-rhel9","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:lightspeed_core"]},{"vendor":"Red Hat","product":"Lightspeed Core","packageName":"lightspeed-core/rag-tool-cpu-rhel9","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:lightspeed_core"]},{"vendor":"Red Hat","product":"Lightspeed Core","packageName":"lightspeed-core/rag-tool-cuda-12.9-rhel9","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:lightspeed_core"]},{"vendor":"Red Hat","product":"Red Hat Ansible Automation Platform 2","packageName":"ansible-automation-platform-24/controller-rhel8","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:ansible_automation_platform:2"]},{"vendor":"Red Hat","product":"Red Hat Ansible Automation Platform 2","packageName":"ansible-automation-platform-24/eda-controller-rhel8","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:ansible_automation_platform:2"]},{"vendor":"Red Hat","product":"Red Hat Ansible Automation Platform 2","packageName":"ansible-automation-platform-24/ee-minimal-rhel8","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:ansible_automation_platform:2"]},{"vendor":"Red Hat","product":"Red Hat Ansible Automation Platform 2","packageName":"ansible-automation-platform-24/ee-minimal-rhel9","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:ansible_automation_platform:2"]},{"vendor":"Red Hat","product":"Red Hat Ansible Automation Platform 2","packageName":"ansible-automation-platform-24/hub-rhel8","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:ansible_automation_platform:2"]},{"vendor":"Red Hat","product":"Red Hat Ansible Automation Platform 2","packageName":"ansible-automation-platform-25/controller-rhel8","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:ansible_automation_platform:2"]},{"vendor":"Red Hat","product":"Red Hat Ansible Automation Platform 2","packageName":"ansible-automation-platform-25/eda-controller-rhel8","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:ansible_automation_platform:2"]},{"vendor":"Red Hat","product":"Red Hat Ansible Automation Platform 2","packageName":"ansible-automation-platform-25/ee-minimal-rhel8","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:ansible_automation_platform:2"]},{"vendor":"Red Hat","product":"Red Hat Ansible Automation Platform 2","packageName":"ansible-automation-platform-25/ee-minimal-rhel9","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:ansible_automation_platform:2"]},{"vendor":"Red Hat","product":"Red Hat Ansible Automation Platform 2","packageName":"ansible-automation-platform-25/hub-rhel8","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:ansible_automation_platform:2"]},{"vendor":"Red Hat","product":"Red Hat Ansible Automation Platform 2","packageName":"ansible-automation-platform-26/controller-rhel9","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:ansible_automation_platform:2"]},{"vendor":"Red Hat","product":"Red Hat Ansible Automation Platform 2","packageName":"ansible-automation-platform-26/ee-minimal-rhel9","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:ansible_automation_platform:2"]},{"vendor":"Red Hat","product":"Red Hat Ansible Automation Platform 2","packageName":"ansible-automation-platform-27/controller-rhel9","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:ansible_automation_platform:2"]},{"vendor":"Red Hat","product":"Red Hat Ansible Automation Platform 2","packageName":"ansible-automation-platform-27/ee-minimal-rhel9","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:ansible_automation_platform:2"]},{"vendor":"Red Hat","product":"Red Hat Ansible Automation Platform 2","packageName":"python3.11-pyOpenSSL","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:ansible_automation_platform:2"]},{"vendor":"Red Hat","product":"Red Hat Ansible Automation Platform 2","packageName":"python3x-pyOpenSSL","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:ansible_automation_platform:2"]},{"vendor":"Red Hat","product":"Red Hat Ansible Automation Platform 2","packageName":"python-pyOpenSSL","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:ansible_automation_platform:2"]},{"vendor":"Red Hat","product":"Red Hat Ansible Automation Platform Ansible Core 2","packageName":"ansible-automation-platform/ee-minimal-rhel8","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:ansible_core:2"]},{"vendor":"Red Hat","product":"Red Hat Ansible Automation Platform Ansible Core 2","packageName":"ansible-automation-platform/ee-minimal-rhel9","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:ansible_core:2"]},{"vendor":"Red Hat","product":"Red Hat Ansible Automation Platform Ansible Core 2","packageName":"ansible-automation-platform-tech-preview/ee-minimal-rhel8","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:ansible_core:2"]},{"vendor":"Red Hat","product":"Red Hat Ansible Automation Platform Ansible Core 2","packageName":"ansible-automation-platform-tech-preview/ee-minimal-rhel9","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:ansible_core:2"]},{"vendor":"Red Hat","product":"Red Hat Ceph Storage 7","packageName":"rhceph/rhceph-7-rhel9","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:ceph_storage:7"]},{"vendor":"Red Hat","product":"Red Hat Ceph Storage 8","packageName":"rhceph/rhceph-8-rhel9","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:ceph_storage:8"]},{"vendor":"Red Hat","product":"Red Hat Ceph Storage 9","packageName":"rhceph/rhceph-9-rhel9","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:ceph_storage:9"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 6","packageName":"pyOpenSSL","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:6"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 7","packageName":"pyOpenSSL","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:7"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 8","packageName":"pyOpenSSL","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:8"]},{"vendor":"Red Hat","product":"Red Hat Hardened Images","packageName":"mariadb11.8","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:hummingbird:1"]},{"vendor":"Red Hat","product":"Red Hat Hardened Images","packageName":"python-sentry-sdk","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:hummingbird:1"]},{"vendor":"Red Hat","product":"Red Hat Hardened Images","packageName":"python-trustme","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:hummingbird:1"]},{"vendor":"Red Hat","product":"Red Hat Hardened Images","packageName":"python-urllib3","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:hummingbird:1"]},{"vendor":"Red Hat","product":"Red Hat OpenShift AI (RHOAI)","packageName":"rhoai/odh-feature-server-rhel9","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:openshift_ai"]},{"vendor":"Red Hat","product":"Red Hat OpenShift AI (RHOAI)","packageName":"rhoai/odh-llama-stack-core-rhel9","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:openshift_ai"]},{"vendor":"Red Hat","product":"Red Hat OpenShift AI (RHOAI)","packageName":"rhoai/odh-mlflow-rhel9","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:openshift_ai"]},{"vendor":"Red Hat","product":"Red Hat OpenShift AI (RHOAI)","packageName":"rhoai/odh-model-registry-job-async-upload-rhel9","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:openshift_ai"]},{"vendor":"Red Hat","product":"Red Hat OpenShift Container Platform 4","packageName":"openshift4/ose-ironic-agent-rhel9","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:openshift:4"]},{"vendor":"Red Hat","product":"Red Hat OpenShift Container Platform 4","packageName":"openshift4/ose-ironic-rhel9","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:openshift:4"]},{"vendor":"Red Hat","product":"Red Hat OpenShift Container Platform 4","packageName":"pyOpenSSL","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:openshift:4"]},{"vendor":"Red Hat","product":"Red Hat OpenShift Container Platform 4","packageName":"python-redis","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:openshift:4"]},{"vendor":"Red Hat","product":"Red Hat OpenStack Platform 17.1","packageName":"pyOpenSSL","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:openstack:17.1"]},{"vendor":"Red Hat","product":"Red Hat OpenStack Platform 18.0","packageName":"pyOpenSSL","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:openstack:18.0"]},{"vendor":"Red Hat","product":"Red Hat OpenStack Platform 18.0","packageName":"rhoso/openstack-cinder-api-rhel9","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:openstack:18.0"]},{"vendor":"Red Hat","product":"Red Hat OpenStack Platform 18.0","packageName":"rhoso/openstack-cinder-backup-rhel9","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:openstack:18.0"]},{"vendor":"Red Hat","product":"Red Hat OpenStack Platform 18.0","packageName":"rhoso/openstack-cinder-base-rhel9","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:openstack:18.0"]},{"vendor":"Red Hat","product":"Red Hat OpenStack Platform 18.0","packageName":"rhoso/openstack-cinder-scheduler-rhel9","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:openstack:18.0"]},{"vendor":"Red Hat","product":"Red Hat OpenStack Platform 18.0","packageName":"rhoso/openstack-cinder-volume-rhel9","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:openstack:18.0"]},{"vendor":"Red Hat","product":"Red Hat OpenStack Platform 18.0","packageName":"rhoso/openstack-glance-api-rhel9","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:openstack:18.0"]},{"vendor":"Red Hat","product":"Red Hat OpenStack Platform 18.0","packageName":"rhoso/openstack-manila-share-rhel9","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:openstack:18.0"]},{"vendor":"Red Hat","product":"Red Hat OpenStack Platform 18.0","packageName":"rhoso/openstack-nova-compute-rhel9","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:openstack:18.0"]},{"vendor":"Red Hat","product":"Red Hat OpenStack Platform 18.0","packageName":"rhoso/openstack-openstackclient-rhel9","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:openstack:18.0"]},{"vendor":"Red Hat","product":"Red Hat Satellite 6","packageName":"python-redis","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:satellite:6"]},{"vendor":"Red Hat","product":"Red Hat Satellite 6","packageName":"python-urllib3","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:satellite:6"]},{"vendor":"Red Hat","product":"Red Hat Satellite 6","packageName":"satellite/iop-advisor-engine-rhel9","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:satellite:6"]},{"vendor":"Red Hat","product":"Red Hat Satellite 6","packageName":"satellite/iop-insights-engine-rhel9","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:satellite:6"]},{"vendor":"Red Hat","product":"Red Hat Satellite 6","packageName":"satellite/iop-vmaas-rhel9","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:satellite:6"]},{"vendor":"Red Hat","product":"Red Hat Satellite 6","packageName":"tfm-pulpcore-python-pyOpenSSL","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:satellite:6"]},{"vendor":"Red Hat","product":"Red Hat Update Infrastructure 4 for Cloud Providers","packageName":"python-redis","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:rhui:4::el8"]},{"vendor":"Red Hat","product":"Red Hat Update Infrastructure 4 for Cloud Providers","packageName":"python-urllib3","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:rhui:4::el8"]},{"vendor":"Red Hat","product":"Red Hat Update Infrastructure 5","packageName":"rhui5/cds-kubernetes-rhel9","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:rhui:5::el9"]},{"vendor":"Red Hat","product":"Red Hat Update Infrastructure 5","packageName":"rhui5/cds-rhel9","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:rhui:5::el9"]},{"vendor":"Red Hat","product":"Red Hat Update Infrastructure 5","packageName":"rhui5/rhua-rhel9","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:rhui:5::el9"]}],"references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-27459","tags":["vdb-entry","x_refsource_REDHAT"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2448503","name":"RHBZ#2448503","tags":["issue-tracking","x_refsource_REDHAT"]},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-27459.json","tags":["x_sadp-csaf-vex"]},{"url":"https://access.redhat.com/errata/RHSA-2026:13512","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:10754","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:14874","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:13508","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:14873","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:14835","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:13553","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:13545","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:59153","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:48758","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:7224","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:11916","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:11856","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:21017","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:24853","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:19375","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:22465","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:48085","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:11996","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:8437","tags":["vendor-advisory","x_refsource_REDHAT"]}],"metrics":[{"other":{"content":{"namespace":"https://access.redhat.com/security/updates/classification/","value":"Important"},"type":"Red Hat severity rating"}},{"cvssV3_1":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":8.1,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"format":"CVSS"}],"problemTypes":[{"descriptions":[{"cweId":"CWE-120","description":"Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"redhat-SADP","orgId":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c","dateUpdated":"2026-09-11T12:09:00.415Z"},"datePublic":"2026-03-17T23:34:28.483Z","solutions":[{"lang":"en","value":"RHSA-2026:13512: Red Hat Ansible Automation Platform 2.5 for RHEL 8, Red Hat Ansible Automation Platform 2.5 for RHEL 9"},{"lang":"en","value":"RHSA-2026:10754: RHUI 4 for RHEL 8"},{"lang":"en","value":"RHSA-2026:14874: Red Hat Satellite 6.16 for RHEL 8, Red Hat Satellite 6.16 for RHEL 9"},{"lang":"en","value":"RHSA-2026:13508: Red Hat Ansible Automation Platform 2.6 for RHEL 9"},{"lang":"en","value":"RHSA-2026:14873: Red Hat Satellite 6.17 for RHEL 9"},{"lang":"en","value":"RHSA-2026:14835: Red Hat Satellite 6.18 for RHEL 9"},{"lang":"en","value":"RHSA-2026:13553: Red Hat Ansible Automation Platform 2.5"},{"lang":"en","value":"RHSA-2026:13545: Red Hat Ansible Automation Platform 2.6"},{"lang":"en","value":"RHSA-2026:59153: Red Hat Ansible Automation Platform 2.7"},{"lang":"en","value":"RHSA-2026:48758: Red Hat Hardened Images"},{"lang":"en","value":"RHSA-2026:7224: Red Hat Hardened Images"},{"lang":"en","value":"RHSA-2026:11916: Red Hat Quay 3.10"},{"lang":"en","value":"RHSA-2026:11856: Red Hat Quay 3.12"},{"lang":"en","value":"RHSA-2026:21017: Red Hat Quay 3.14"},{"lang":"en","value":"RHSA-2026:24853: Red Hat Quay 3.15"},{"lang":"en","value":"RHSA-2026:19375: Red Hat Quay 3.16"},{"lang":"en","value":"RHSA-2026:22465: Red Hat Quay 3.17"},{"lang":"en","value":"RHSA-2026:48085: Red Hat Quay 3.18"},{"lang":"en","value":"RHSA-2026:11996: Red Hat Quay 3.9"},{"lang":"en","value":"RHSA-2026:8437: Red Hat Trusted Artifact Signer 1.4"}],"timeline":[{"lang":"en","time":"2026-03-18T00:01:41.404Z","value":"Reported to Red Hat."},{"lang":"en","time":"2026-03-17T23:34:28.483Z","value":"Made public."}],"workarounds":[{"lang":"en","value":"To mitigate this flaw, ensure the callback provided to the set_cookie_generate_callback function strictly limits the returned cookie string or byte sequence to under 256 bytes."}],"x_adpType":"supplier","x_generator":{"engine":"sadp-cli 1.0.0"}}]}}}