{"id":"CVE-2026-4926","state":"PUBLISHED","title":"path-to-regexp vulnerable to Denial of Service via sequential optional groups","description":"Impact:\n\nA bad regular expression is generated any time you have multiple sequential optional groups (curly brace syntax), such as `{a}{b}{c}:z`. The generated regex grows exponentially with the number of groups, causing denial of service.\n\nPatches:\n\nFixed in version 8.4.0.\n\nWorkarounds:\n\nLimit the number of sequential optional groups in route patterns. Avoid passing user-controlled input as route patterns.","publishedAt":"2026-03-26T18:59:38.000Z","updatedAt":"2026-09-17T12:04:38.293Z","severity":{"score":7.5,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","source":"openjs"},"assigner":"openjs","products":["path-to-regexp path-to-regexp"],"affected":[{"vendor":"path-to-regexp","product":"path-to-regexp","packageURL":"pkg:npm/path-to-regexp","defaultStatus":"unaffected","versions":[{"version":"8.0.0","status":"affected","lessThan":"8.4.0","versionType":"semver"},{"version":"8.4.0","status":"unaffected","versionType":"semver"}]}],"references":["https://cna.openjsf.org/security-advisories.html","https://access.redhat.com/security/cve/CVE-2026-4926","https://bugzilla.redhat.com/show_bug.cgi?id=2451867","https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-4926.json","https://access.redhat.com/errata/RHSA-2026:24761","https://access.redhat.com/errata/RHSA-2026:24762","https://access.redhat.com/errata/RHSA-2026:17789","https://access.redhat.com/errata/RHSA-2026:19409","https://access.redhat.com/errata/RHSA-2026:19410","https://access.redhat.com/errata/RHSA-2026:24866","https://access.redhat.com/errata/RHSA-2026:13545","https://access.redhat.com/errata/RHSA-2026:9742","https://access.redhat.com/errata/RHSA-2026:13826","https://access.redhat.com/errata/RHSA-2026:36651","https://access.redhat.com/errata/RHSA-2026:40945","https://access.redhat.com/errata/RHSA-2026:40118","https://access.redhat.com/errata/RHSA-2026:50300","https://access.redhat.com/errata/RHSA-2026:65126","https://access.redhat.com/errata/RHSA-2026:10175","https://access.redhat.com/errata/RHSA-2026:9385","https://access.redhat.com/errata/RHSA-2026:10172","https://access.redhat.com/errata/RHSA-2026:10153"],"weaknesses":["CWE-400","CWE-1333"],"ingestedAt":"2026-10-29T20:12:16.098Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/4xxx/CVE-2026-4926.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-4926","state":"PUBLISHED","datePublished":"2026-03-26T18:59:38.000Z","dateUpdated":"2026-09-17T12:04:38.293Z","assignerShortName":"openjs","assignerOrgId":"ce714d77-add3-4f53-aff5-83d477b104bb","dateReserved":"2026-03-26T18:36:49.229Z"},"containers":{"cna":{"title":"path-to-regexp vulnerable to Denial of Service via sequential optional groups","descriptions":[{"lang":"en","value":"Impact:\n\nA bad regular expression is generated any time you have multiple sequential optional groups (curly brace syntax), such as `{a}{b}{c}:z`. The generated regex grows exponentially with the number of groups, causing denial of service.\n\nPatches:\n\nFixed in version 8.4.0.\n\nWorkarounds:\n\nLimit the number of sequential optional groups in route patterns. Avoid passing user-controlled input as route patterns."}],"affected":[{"vendor":"path-to-regexp","product":"path-to-regexp","packageURL":"pkg:npm/path-to-regexp","defaultStatus":"unaffected","versions":[{"version":"8.0.0","status":"affected","lessThan":"8.4.0","versionType":"semver"},{"version":"8.4.0","status":"unaffected","versionType":"semver"}]}],"references":[{"url":"https://cna.openjsf.org/security-advisories.html"}],"metrics":[{"format":"CVSS","cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","baseScore":7.5,"baseSeverity":"HIGH"},"scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-400","lang":"en","description":"CWE-400: Uncontrolled Resource Consumption","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-1333","lang":"en","description":"CWE-1333: Inefficient Regular Expression Complexity","type":"CWE"}]}],"providerMetadata":{"shortName":"openjs","orgId":"ce714d77-add3-4f53-aff5-83d477b104bb","dateUpdated":"2026-03-26T18:59:38.000Z"},"credits":[{"lang":"en","type":"reporter","value":"uug4na"},{"lang":"en","type":"remediation developer","value":"blakeembrey"},{"lang":"en","type":"remediation reviewer","value":"UlisesGascon"}],"x_generator":{"engine":"cve-kit 1.0.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-03-27T19:44:44.790485Z","id":"CVE-2026-4926","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-03-27T19:44:53.294Z"}},{"title":"path-to-regexp: path-to-regexp: Denial of Service via crafted regular expressions","descriptions":[{"lang":"en","value":"A flaw was found in path-to-regexp. A remote attacker could exploit this vulnerability by providing specially crafted input that generates a regular expression with multiple sequential optional groups. This leads to an exponential growth in the generated regular expression, causing a Denial of Service (DoS) due to excessive resource consumption."}],"affected":[{"vendor":"Red Hat","product":"Cryostat 4 on RHEL 9","packageName":"cryostat/cryostat-openshift-console-plugin-rhel9","defaultStatus":"affected","versions":[{"version":"4.2.0-9","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://catalog.redhat.com/software/containers/","cpes":["cpe:/a:redhat:cryostat:4::el9"]},{"vendor":"Red Hat","product":"Red Hat Ansible Automation Platform 2.5 for RHEL 8","packageName":"automation-gateway","defaultStatus":"affected","versions":[{"version":"0:2.5.20260422-3.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":"automation-gateway","defaultStatus":"affected","versions":[{"version":"0:2.5.20260422-3.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-platform-ui","defaultStatus":"affected","versions":[{"version":"0:2.6.9-1.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":"Migration Toolkit for Virtualization 2.1","packageName":"migration-toolkit-virtualization/mtv-console-plugin-rhel9","defaultStatus":"affected","versions":[{"version":"1779139872","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://catalog.redhat.com/software/containers/","cpes":["cpe:/a:redhat:migration_toolkit_virtualization:2.10::el9"]},{"vendor":"Red Hat","product":"Migration Toolkit for Virtualization 2.9","packageName":"migration-toolkit-virtualization/mtv-console-plugin-rhel9","defaultStatus":"affected","versions":[{"version":"1778927462","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://catalog.redhat.com/software/containers/","cpes":["cpe:/a:redhat:migration_toolkit_virtualization:2.9::el9"]},{"vendor":"Red Hat","product":"Red Hat Ansible Automation Platform 2.6","packageName":"ansible-automation-platform-tech-preview/mcp-server-rhel9","defaultStatus":"affected","versions":[{"version":"1777386606","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/gateway-rhel9","defaultStatus":"affected","versions":[{"version":"1779773804","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 Developer Hub 1.8","packageName":"rhdh/rhdh-hub-rhel9","defaultStatus":"affected","versions":[{"version":"1776784286","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://catalog.redhat.com/software/containers/","cpes":["cpe:/a:redhat:rhdh:1.8::el9"]},{"vendor":"Red Hat","product":"Red Hat Developer Hub 1.9","packageName":"rhdh/rhdh-hub-rhel9","defaultStatus":"affected","versions":[{"version":"1777903262","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://catalog.redhat.com/software/containers/","cpes":["cpe:/a:redhat:rhdh:1.9::el9"]},{"vendor":"Red Hat","product":"Red Hat Edge Manager 1.0","packageName":"rhem/flightctl-ui-ocp-rhel9","defaultStatus":"affected","versions":[{"version":"1783502765","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://catalog.redhat.com/software/containers/","cpes":["cpe:/a:redhat:edge_manager:1.0::el9"]},{"vendor":"Red Hat","product":"Red Hat Edge Manager 1.0","packageName":"rhem/flightctl-ui-rhel9","defaultStatus":"affected","versions":[{"version":"1783502438","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://catalog.redhat.com/software/containers/","cpes":["cpe:/a:redhat:edge_manager:1.0::el9"]},{"vendor":"Red Hat","product":"Red Hat Edge Manager 1.1","packageName":"rhem/flightctl-ui-ocp-rhel10","defaultStatus":"affected","versions":[{"version":"1784194938","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://catalog.redhat.com/software/containers/","cpes":["cpe:/a:redhat:edge_manager:1.1::el10"]},{"vendor":"Red Hat","product":"Red Hat Edge Manager 1.1","packageName":"rhem/flightctl-ui-rhel10","defaultStatus":"affected","versions":[{"version":"1784194574","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://catalog.redhat.com/software/containers/","cpes":["cpe:/a:redhat:edge_manager:1.1::el10"]},{"vendor":"Red Hat","product":"Red Hat Edge Manager 1.1","packageName":"rhem/flightctl-ui-ocp-rhel9","defaultStatus":"affected","versions":[{"version":"1784126822","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://catalog.redhat.com/software/containers/","cpes":["cpe:/a:redhat:edge_manager:1.1::el9"]},{"vendor":"Red Hat","product":"Red Hat Edge Manager 1.1","packageName":"rhem/flightctl-ui-rhel9","defaultStatus":"affected","versions":[{"version":"1784127736","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://catalog.redhat.com/software/containers/","cpes":["cpe:/a:redhat:edge_manager:1.1::el9"]},{"vendor":"Red Hat","product":"Red Hat Migration Toolkit for Applications 8.1","packageName":"mta/mta-ui-rhel9","defaultStatus":"affected","versions":[{"version":"1785169013","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://catalog.redhat.com/software/containers/","cpes":["cpe:/a:redhat:migration_toolkit_applications:8.1::el9"]},{"vendor":"Red Hat","product":"Red Hat OpenShift AI 2.25","packageName":"rhoai/odh-workbench-codeserver-datascience-cpu-py312-rhel9","defaultStatus":"affected","versions":[{"version":"1787801527","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://catalog.redhat.com/software/containers/","cpes":["cpe:/a:redhat:openshift_ai:2.25::el9"]},{"vendor":"Red Hat","product":"Red Hat OpenShift Dev Spaces 3.27","packageName":"devspaces/code-rhel9","defaultStatus":"affected","versions":[{"version":"1776744110","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://catalog.redhat.com/software/containers/","cpes":["cpe:/a:redhat:openshift_devspaces:3.27::el9"]},{"vendor":"Red Hat","product":"Red Hat OpenShift Dev Spaces 3.27","packageName":"devspaces/jetbrains-ide-rhel9","defaultStatus":"affected","versions":[{"version":"1776795400","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://catalog.redhat.com/software/containers/","cpes":["cpe:/a:redhat:openshift_devspaces:3.27::el9"]},{"vendor":"Red Hat","product":"Red Hat OpenShift distributed tracing 3.9.3","packageName":"rhosdt/tempo-jaeger-query-rhel9","defaultStatus":"affected","versions":[{"version":"1776435608","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://catalog.redhat.com/software/containers/","cpes":["cpe:/a:redhat:openshift_distributed_tracing:3.9::el9"]},{"vendor":"Red Hat","product":"Red Hat Trusted Artifact Signer 1.3","packageName":"rhtas/rhtas-console-ui-rhel9","defaultStatus":"affected","versions":[{"version":"1776673130","status":"unaffected","lessThan":"*","versionType":"rpm"},{"version":"1776889929","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://catalog.redhat.com/software/containers/","cpes":["cpe:/a:redhat:trusted_artifact_signer:1.3::el9"]},{"vendor":"Red Hat","product":"Cryostat 4","packageName":"io.cryostat-cryostat","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:cryostat:4"]},{"vendor":"Red Hat","product":"Logging Subsystem for Red Hat OpenShift","packageName":"openshift-logging/elasticsearch6-rhel9","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:logging:5"]},{"vendor":"Red Hat","product":"Logging Subsystem for Red Hat OpenShift","packageName":"openshift-logging/elasticsearch-operator-bundle","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:logging:5"]},{"vendor":"Red Hat","product":"Logging Subsystem for Red Hat OpenShift","packageName":"openshift-logging/elasticsearch-proxy-rhel9","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:logging:5"]},{"vendor":"Red Hat","product":"Logging Subsystem for Red Hat OpenShift","packageName":"openshift-logging/elasticsearch-rhel9-operator","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:logging:5"]},{"vendor":"Red Hat","product":"Logging Subsystem for Red Hat OpenShift","packageName":"openshift-logging/kibana6-rhel8","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:logging:5"]},{"vendor":"Red Hat","product":"Logging Subsystem for Red Hat OpenShift","packageName":"openshift-logging/logging-curator5-rhel9","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:logging:5"]},{"vendor":"Red Hat","product":"Multicluster Engine for Kubernetes","packageName":"multicluster-engine/console-mce-rhel9","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:multicluster_engine"]},{"vendor":"Red Hat","product":"Network Observability Operator","packageName":"network-observability/network-observability-console-plugin-rhel9","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:network_observ_optr:1"]},{"vendor":"Red Hat","product":"OpenShift Lightspeed","packageName":"openshift-lightspeed/lightspeed-console-plugin-pf5-rhel9","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:openshift_lightspeed"]},{"vendor":"Red Hat","product":"OpenShift Lightspeed","packageName":"openshift-lightspeed/lightspeed-console-plugin-rhel9","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:openshift_lightspeed"]},{"vendor":"Red Hat","product":"OpenShift Pipelines","packageName":"openshift-pipelines/pipelines-console-plugin-rhel9","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:openshift_pipelines:1"]},{"vendor":"Red Hat","product":"OpenShift Service Mesh 2","packageName":"openshift-service-mesh/kiali-ossmc-rhel8","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:service_mesh:2"]},{"vendor":"Red Hat","product":"OpenShift Service Mesh 2","packageName":"openshift-service-mesh/kiali-rhel8","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:service_mesh:2"]},{"vendor":"Red Hat","product":"OpenShift Service Mesh 3","packageName":"openshift-service-mesh/kiali-operator-bundle","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:service_mesh:3"]},{"vendor":"Red Hat","product":"OpenShift Service Mesh 3","packageName":"openshift-service-mesh/kiali-ossmc-rhel9","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:service_mesh:3"]},{"vendor":"Red Hat","product":"OpenShift Service Mesh 3","packageName":"openshift-service-mesh/kiali-rhel9","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:service_mesh:3"]},{"vendor":"Red Hat","product":"OpenShift Service Mesh 3","packageName":"openshift-service-mesh/kiali-rhel9-operator","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:service_mesh:3"]},{"vendor":"Red Hat","product":"Red Hat Advanced Cluster Management for Kubernetes 2","packageName":"rhacm2/console-rhel9","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:acm:2"]},{"vendor":"Red Hat","product":"Red Hat Advanced Cluster Security 4","packageName":"advanced-cluster-security/rhacs-main-rhel8","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:advanced_cluster_security:4"]},{"vendor":"Red Hat","product":"Red Hat AMQ Broker 7","packageName":"amq7-tech-preview/amq-broker-jolokia-api-server-rhel9","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:amq_broker:7"]},{"vendor":"Red Hat","product":"Red Hat AMQ Broker 7","packageName":"org.jolokia-jolokia-parent","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:amq_broker:7"]},{"vendor":"Red Hat","product":"Red Hat Ansible Automation Platform 2","packageName":"automation-controller","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":"automation-eda-controller","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 build of Apache Camel - HawtIO 4","packageName":"io.hawt-project","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:apache_camel_hawtio:4"]},{"vendor":"Red Hat","product":"Red Hat build of Apicurio Registry 2","packageName":"io.apicurio-apicurio-registry","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:service_registry:2"]},{"vendor":"Red Hat","product":"Red Hat Build of Podman Desktop","packageName":"podman-desktop-macos-1-0","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:podman_desktop:1"]},{"vendor":"Red Hat","product":"Red Hat Build of Podman Desktop","packageName":"podman-desktop-windows-1-0","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:podman_desktop:1"]},{"vendor":"Red Hat","product":"Red Hat Data Grid 8","packageName":"org.infinispan-infinispan-console","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:jboss_data_grid:8"]},{"vendor":"Red Hat","product":"Red Hat Developer Hub","packageName":"rhdh/backstage-community-plugin-catalog-backend-module-scaffolder-relation-processor","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:rhdh:1"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 10","packageName":"linux-sgx","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:10"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 8","packageName":"mozjs60","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:8"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 8","packageName":"pcs","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:8"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 9","packageName":"gjs","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:9"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 9","packageName":"linux-sgx","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:9"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 9","packageName":"pcs","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:9"]},{"vendor":"Red Hat","product":"Red Hat Fuse 7","packageName":"io.apicurio-apicurito","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:jboss_fuse:7"]},{"vendor":"Red Hat","product":"Red Hat Fuse 7","packageName":"io.hawt-hawtio-online","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:jboss_fuse:7"]},{"vendor":"Red Hat","product":"Red Hat Fuse 7","packageName":"io.hawt-project","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:jboss_fuse:7"]},{"vendor":"Red Hat","product":"Red Hat Fuse 7","packageName":"io.syndesis-syndesis-parent","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:jboss_fuse:7"]},{"vendor":"Red Hat","product":"Red Hat JBoss Enterprise Application Platform 7","packageName":"io.hawt-project","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:jboss_enterprise_application_platform:7"]},{"vendor":"Red Hat","product":"Red Hat JBoss Enterprise Application Platform 8","packageName":"io.hawt-project","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:jboss_enterprise_application_platform:8"]},{"vendor":"Red Hat","product":"Red Hat JBoss Enterprise Application Platform Expansion Pack","packageName":"io.hawt-project","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:jbosseapxp"]},{"vendor":"Red Hat","product":"Red Hat JBoss Enterprise Application Platform Expansion Pack","packageName":"org.keycloak-keycloak-parent","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:jbosseapxp"]},{"vendor":"Red Hat","product":"Red Hat OpenShift AI (RHOAI)","packageName":"rhoai/odh-data-science-pipelines-argo-argoexec-rhel8","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-data-science-pipelines-argo-workflowcontroller-rhel8","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 Container Platform 4","packageName":"openshift4/ose-agent-installer-ui-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-console","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-console-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-monitoring-plugin-rhel8","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":"openshift4/ose-monitoring-plugin-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 Data Foundation 4","packageName":"odf4/mcg-core-rhel9","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:openshift_data_foundation:4"]},{"vendor":"Red Hat","product":"Red Hat Openshift Data Foundation 4","packageName":"odf4/ocs-client-console-rhel9","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:openshift_data_foundation:4"]},{"vendor":"Red Hat","product":"Red Hat Openshift Data Foundation 4","packageName":"odf4/odf-console-rhel9","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:openshift_data_foundation:4"]},{"vendor":"Red Hat","product":"Red Hat Openshift Data Foundation 4","packageName":"odf4/odf-multicluster-console-rhel9","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:openshift_data_foundation:4"]},{"vendor":"Red Hat","product":"Red Hat OpenShift GitOps","packageName":"openshift-gitops-1/argocd-rhel8","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:openshift_gitops:1"]},{"vendor":"Red Hat","product":"Red Hat OpenShift GitOps","packageName":"openshift-gitops-1/argocd-rhel9","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:openshift_gitops:1"]},{"vendor":"Red Hat","product":"Red Hat OpenShift GitOps","packageName":"openshift-gitops-1/console-plugin-rhel8","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:openshift_gitops:1"]},{"vendor":"Red Hat","product":"Red Hat OpenShift Virtualization 4","packageName":"container-native-virtualization/kubevirt-console-plugin","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:container_native_virtualization:4"]},{"vendor":"Red Hat","product":"Red Hat OpenShift Virtualization 4","packageName":"container-native-virtualization/kubevirt-console-plugin-rhel9","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:container_native_virtualization:4"]},{"vendor":"Red Hat","product":"Red Hat Process Automation 7","packageName":"org.kie-process-migration-service","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:jboss_enterprise_bpms_platform:7"]},{"vendor":"Red Hat","product":"Red Hat Process Automation 7","packageName":"org.uberfire-uberfire-parent","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:jboss_enterprise_bpms_platform:7"]},{"vendor":"Red Hat","product":"Red Hat Quay 3","packageName":"quay/quay-rhel8","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:quay:3"]},{"vendor":"Red Hat","product":"Red Hat Satellite 6","packageName":"nodejs-react-router","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":"nodejs-react-router-dom","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:satellite:6"]},{"vendor":"Red Hat","product":"Red Hat Single Sign-On 7","packageName":"org.keycloak-keycloak-parent","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:red_hat_single_sign_on:7"]},{"vendor":"Red Hat","product":"Red Hat Trusted Profile Analyzer","packageName":"rhtpa/rhtpa-trustification-service-rhel9","defaultStatus":"unaffected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:trusted_profile_analyzer:2"]},{"vendor":"Red Hat","product":"Self-service automation portal 2","packageName":"ansible-automation-platform/automation-portal","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:ansible_portal:2"]}],"references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-4926","tags":["vdb-entry","x_refsource_REDHAT"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2451867","name":"RHBZ#2451867","tags":["issue-tracking","x_refsource_REDHAT"]},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-4926.json","tags":["x_sadp-csaf-vex"]},{"url":"https://access.redhat.com/errata/RHSA-2026:24761","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:24762","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:17789","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:19409","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:19410","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:24866","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-2026:9742","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:13826","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:36651","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:40945","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:40118","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:50300","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:65126","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:10175","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:9385","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:10172","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:10153","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":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"format":"CVSS"}],"problemTypes":[{"descriptions":[{"cweId":"CWE-1333","description":"Inefficient Regular Expression Complexity","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"redhat-SADP","orgId":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c","dateUpdated":"2026-09-17T12:04:38.293Z"},"datePublic":"2026-03-26T18:59:38.000Z","solutions":[{"lang":"en","value":"RHSA-2026:24761: Red Hat Ansible Automation Platform 2.5 for RHEL 8, Red Hat Ansible Automation Platform 2.5 for RHEL 9"},{"lang":"en","value":"RHSA-2026:24762: Red Hat Ansible Automation Platform 2.6 for RHEL 9"},{"lang":"en","value":"RHSA-2026:17789: Cryostat 4 on RHEL 9"},{"lang":"en","value":"RHSA-2026:19409: Migration Toolkit for Virtualization 2.1"},{"lang":"en","value":"RHSA-2026:19410: Migration Toolkit for Virtualization 2.9"},{"lang":"en","value":"RHSA-2026:24866: Red Hat Ansible Automation Platform 2.6"},{"lang":"en","value":"RHSA-2026:13545: Red Hat Ansible Automation Platform 2.6"},{"lang":"en","value":"RHSA-2026:9742: Red Hat Developer Hub 1.8"},{"lang":"en","value":"RHSA-2026:13826: Red Hat Developer Hub 1.9"},{"lang":"en","value":"RHSA-2026:36651: Red Hat Edge Manager 1.0"},{"lang":"en","value":"RHSA-2026:40945: Red Hat Edge Manager 1.1"},{"lang":"en","value":"RHSA-2026:40118: Red Hat Edge Manager 1.1"},{"lang":"en","value":"RHSA-2026:50300: Red Hat Migration Toolkit for Applications 8.1"},{"lang":"en","value":"RHSA-2026:65126: Red Hat OpenShift AI 2.25"},{"lang":"en","value":"RHSA-2026:10175: Red Hat OpenShift Dev Spaces 3.27"},{"lang":"en","value":"RHSA-2026:9385: Red Hat OpenShift distributed tracing 3.9.3"},{"lang":"en","value":"RHSA-2026:10172: Red Hat Trusted Artifact Signer 1.3"},{"lang":"en","value":"RHSA-2026:10153: Red Hat Trusted Artifact Signer 1.3"}],"timeline":[{"lang":"en","time":"2026-03-26T20:03:28.427Z","value":"Reported to Red Hat."},{"lang":"en","time":"2026-03-26T18:59:38.000Z","value":"Made public."}],"workarounds":[{"lang":"en","value":"To mitigate this vulnerability, limit the use of multiple sequential optional groups in route patterns within applications that use `path-to-regexp`. Additionally, avoid directly passing user-controlled input as route patterns to prevent the generation of maliciously crafted regular expressions."}],"x_adpType":"supplier","x_generator":{"engine":"sadp-cli 1.0.0"}}]}}}