{"id":"CVE-2026-122311","aliases":[],"cve":{"records":[{"id":"CVE-2026-122311","source":"VulnCheck","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-11-04T23:25:07.315Z","published":"2026-11-05T02:25:13.645Z","modified":"2026-11-05T02:25:13.645Z"}],"publishers":[{"name":"VulnCheck","role":"CNA","organizationId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","modified":"2026-11-05T02:25:13.645Z"}],"references":[{"url":"https://github.com/kyverno/kyverno/security/advisories/GHSA-4pqm-wqq6-h9q2","tags":["vendor-advisory"],"source":"VulnCheck"},{"url":"https://www.vulncheck.com/advisories/kyverno-1.16.0-before-1.19.2-path-traversal-in-namespaced-cel-policies-via-resource-argument","tags":["third-party-advisory"],"source":"VulnCheck"}],"weaknesses":[{"id":"CWE-22","description":"Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')","source":"VulnCheck"}],"applicability":[{"source":"VulnCheck","statements":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:kyverno:kyverno:*:*:*:*:*:*:*:*","versionEndExcluding":"1.19.2","versionStartIncluding":"1.16.0"}]}]}]}],"prioritization":[]},"title":"Kyverno 1.16.0 before 1.19.2 Path Traversal in Namespaced CEL Policies via resource argument","titleSource":"VulnCheck","descriptionSource":"VulnCheck","description":"Kyverno from 1.16.0 before 1.19.2 fails to validate path segments in the resource argument of resource.get() and resource.post(), allowing namespaced CEL policies to escape their namespace. Tenants who can create a NamespacedValidatingPolicy can insert .. segments to read and write arbitrary cluster objects using the admission controller's ServiceAccount, leading to cluster takeover.","score":9.9,"severity":"critical","published":"2026-11-05T02:25:13.645Z","modified":"2026-11-05T02:25:13.645Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"kyverno","name":"kyverno","platforms":[],"versions":[{"version":"1.16.0","status":"affected","lessThan":"1.19.2","versionType":"semver"},{"version":"1.19.2","status":"unaffected","versionType":"semver"}],"defaultStatus":"unaffected","packageURL":"pkg:golang/github.com/kyverno/kyverno","packageIdentity":{"ecosystem":"Go","name":"github.com/kyverno/kyverno"},"cpes":[],"source":"VulnCheck","url":"https://www.cve.org/CVERecord?id=CVE-2026-122311"}],"remediation":[],"references":["https://github.com/kyverno/kyverno/security/advisories/GHSA-4pqm-wqq6-h9q2","https://www.vulncheck.com/advisories/kyverno-1.16.0-before-1.19.2-path-traversal-in-namespaced-cel-policies-via-resource-argument"],"sources":[{"name":"CVE","id":"CVE-2026-122311","modified":"2026-11-05T02:25:13.645Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-122311"}],"assessments":[{"source":"VulnCheck","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H","score":9.4},{"source":"VulnCheck","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","score":9.9}],"sourceAffected":[],"observedAt":"2026-11-05T03:19:11.777Z","kev":{"status":"not-listed","checkedAt":"2026-11-06T03:10:31.367Z"},"coverage":[{"source":"NVD","status":"available","checkedAt":"2026-11-05T04:25:32.905Z","attemptedAt":"2026-11-05T04:25:32.905Z"},{"source":"GHSA","status":"available","checkedAt":"2026-11-05T04:20:35.994Z","attemptedAt":"2026-11-05T04:20:35.994Z"},{"source":"EUVD","status":"available","checkedAt":"2026-11-05T04:20:36.292Z","attemptedAt":"2026-11-05T04:20:36.292Z"},{"source":"EPSS","status":"no-result","checkedAt":"2026-11-05T04:20:35.532Z","attemptedAt":"2026-11-05T04:20:35.532Z"}],"evidence":[{"source":"GitHub Advisory Database","id":"GHSA-p59g-p6q6-8969","url":"https://github.com/advisories/GHSA-p59g-p6q6-8969","modified":"2026-11-05T03:30:38Z","score":9.9,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","checkedAt":"2026-11-05T04:20:35.994Z"},{"source":"ENISA EUVD","id":"EUVD-2026-117222","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-117222","modified":"Nov 5, 2026, 2:25:13 AM","score":9.4,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H","checkedAt":"2026-11-05T04:20:36.292Z"},{"source":"NVD","id":"CVE-2026-122311","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-122311","modified":"2026-11-05T03:17:23.497","score":9.4,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","checkedAt":"2026-11-05T04:25:32.905Z"},{"source":"NVD","id":"CVE-2026-122311","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-122311","modified":"2026-11-05T03:17:23.497","score":9.9,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","checkedAt":"2026-11-05T04:25:32.905Z"}],"aiSummary":{"text":"Kyverno versions 1.16.0 before 1.19.2 have a path traversal weakness, allowing namespaced CEL policies to escape their namespace. An attacker with access to create a NamespacedValidatingPolicy can read and write arbitrary cluster objects. This may lead to cluster takeover.","model":"@cf/meta/llama-3.3-70b-instruct-fp8-fast","generatedAt":"2026-11-05T03:31:10.888Z","sources":[{"name":"CVE","url":"https://www.cve.org/CVERecord?id=CVE-2026-122311"}]}}