{"id":"CVE-2026-50566","state":"PUBLISHED","title":"Fission: Environment Runtime.Container and Builder.Container SecurityContext bypass allows privileged pod creation","description":"Fission is an open-source, Kubernetes-native serverless framework that simplifies the deployment of functions and applications on Kubernetes. Prior to version 1.24.0, a tenant with environments.fission.io create/update RBAC can run privileged / allowPrivilegeEscalation / dangerous-capability containers in the Fission function or builder namespace, scheduled under the executor's high-privilege service account — enabling container-sandbox escape, host filesystem and network access, and potential node- and cluster-level compromise. This issue has been patched in version 1.24.0.","publishedAt":"2026-06-10T17:29:35.349Z","updatedAt":"2026-06-12T12:44:18.213Z","severity":{"score":9.9,"label":"Critical","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","source":"GitHub_M"},"assigner":"GitHub_M","products":["fission fission"],"affected":[{"vendor":"fission","product":"fission","versions":[{"version":"< 1.24.0","status":"affected"}]}],"references":["https://github.com/fission/fission/security/advisories/GHSA-m63v-2g9w-2w6v","https://github.com/fission/fission/pull/3406","https://github.com/fission/fission/releases/tag/v1.24.0"],"weaknesses":["CWE-250","CWE-269"],"ingestedAt":"2026-10-29T20:12:16.098Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/50xxx/CVE-2026-50566.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-50566","state":"PUBLISHED","datePublished":"2026-06-10T17:29:35.349Z","dateUpdated":"2026-06-12T12:44:18.213Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-06-04T21:34:34.426Z"},"containers":{"cna":{"title":"Fission: Environment Runtime.Container and Builder.Container SecurityContext bypass allows privileged pod creation","descriptions":[{"lang":"en","value":"Fission is an open-source, Kubernetes-native serverless framework that simplifies the deployment of functions and applications on Kubernetes. Prior to version 1.24.0, a tenant with environments.fission.io create/update RBAC can run privileged / allowPrivilegeEscalation / dangerous-capability containers in the Fission function or builder namespace, scheduled under the executor's high-privilege service account — enabling container-sandbox escape, host filesystem and network access, and potential node- and cluster-level compromise. This issue has been patched in version 1.24.0."}],"affected":[{"vendor":"fission","product":"fission","versions":[{"version":"< 1.24.0","status":"affected"}]}],"references":[{"url":"https://github.com/fission/fission/security/advisories/GHSA-m63v-2g9w-2w6v","name":"https://github.com/fission/fission/security/advisories/GHSA-m63v-2g9w-2w6v","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/fission/fission/pull/3406","name":"https://github.com/fission/fission/pull/3406","tags":["x_refsource_MISC"]},{"url":"https://github.com/fission/fission/releases/tag/v1.24.0","name":"https://github.com/fission/fission/releases/tag/v1.24.0","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":9.9,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-250","lang":"en","description":"CWE-250: Execution with Unnecessary Privileges","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-269","lang":"en","description":"CWE-269: Improper Privilege Management","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-06-10T17:29:35.349Z"},"source":{"advisory":"GHSA-m63v-2g9w-2w6v","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-06-12T03:55:23.879271Z","id":"CVE-2026-50566","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":"2026-06-12T12:44:18.213Z"}}]}}}