{"id":"CVE-2026-41068","state":"PUBLISHED","title":"Kyverno: Cross-Namespace Read Bypasses RBAC Isolation (CVE-2026-22039 Incomplete Fix)","description":"Kyverno is a policy engine designed for cloud native platform engineering teams. The patch for CVE-2026-22039 fixed cross-namespace privilege escalation in Kyverno's `apiCall` context by validating the `URLPath` field. However, the ConfigMap context loader has the identical vulnerability — the `configMap.namespace` field accepts any namespace with zero validation, allowing a namespace admin to read ConfigMaps from any namespace using Kyverno's privileged service account. This is a complete RBAC bypass in multi-tenant Kubernetes clusters. An updated fix is available in version 1.17.2.","publishedAt":"2026-04-24T03:14:27.640Z","updatedAt":"2026-04-24T16:22:26.972Z","severity":{"score":7.7,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["kyverno kyverno"],"affected":[{"vendor":"kyverno","product":"kyverno","versions":[{"version":"< 1.17.2","status":"affected"}]}],"references":["https://github.com/kyverno/kyverno/security/advisories/GHSA-cvq5-hhx3-f99p","https://github.com/kyverno/kyverno/commit/bbf3e5c01391d612968440659028ae98e565a777"],"weaknesses":["CWE-863"],"ingestedAt":"2026-10-29T20:11:57.932Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/41xxx/CVE-2026-41068.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-41068","state":"PUBLISHED","datePublished":"2026-04-24T03:14:27.640Z","dateUpdated":"2026-04-24T16:22:26.972Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-04-16T16:43:03.174Z"},"containers":{"cna":{"title":"Kyverno: Cross-Namespace Read Bypasses RBAC Isolation (CVE-2026-22039 Incomplete Fix)","descriptions":[{"lang":"en","value":"Kyverno is a policy engine designed for cloud native platform engineering teams. The patch for CVE-2026-22039 fixed cross-namespace privilege escalation in Kyverno's `apiCall` context by validating the `URLPath` field. However, the ConfigMap context loader has the identical vulnerability — the `configMap.namespace` field accepts any namespace with zero validation, allowing a namespace admin to read ConfigMaps from any namespace using Kyverno's privileged service account. This is a complete RBAC bypass in multi-tenant Kubernetes clusters. An updated fix is available in version 1.17.2."}],"affected":[{"vendor":"kyverno","product":"kyverno","versions":[{"version":"< 1.17.2","status":"affected"}]}],"references":[{"url":"https://github.com/kyverno/kyverno/security/advisories/GHSA-cvq5-hhx3-f99p","name":"https://github.com/kyverno/kyverno/security/advisories/GHSA-cvq5-hhx3-f99p","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/kyverno/kyverno/commit/bbf3e5c01391d612968440659028ae98e565a777","name":"https://github.com/kyverno/kyverno/commit/bbf3e5c01391d612968440659028ae98e565a777","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.7,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-863","lang":"en","description":"CWE-863: Incorrect Authorization","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-04-24T03:14:27.640Z"},"source":{"advisory":"GHSA-cvq5-hhx3-f99p","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/kyverno/kyverno/security/advisories/GHSA-cvq5-hhx3-f99p","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-04-24T16:21:58.960135Z","id":"CVE-2026-41068","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-04-24T16:22:26.972Z"}}]}}}