{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-122304","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","state":"PUBLISHED","assignerShortName":"VulnCheck","dateReserved":"2026-11-04T23:23:51.289Z","datePublished":"2026-11-05T02:25:08.931Z","dateUpdated":"2026-11-05T02:25:08.931Z"},"containers":{"cna":{"providerMetadata":{"orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","shortName":"VulnCheck","dateUpdated":"2026-11-05T02:25:08.931Z"},"datePublic":"2026-10-21T00:00:00.000Z","title":"Kyverno 1.17.0 before 1.19.2 Privilege Escalation via CleanupPolicy Context Loader","descriptions":[{"lang":"en","value":"Kyverno from 1.17.0 before 1.19.2 contains an authorization bypass vulnerability that allows namespace admins to escape namespace confinement because the cleanup controller builds its context loader with a nil policy. Attackers can create a namespaced CleanupPolicy with apiCall or globalReference context entries to read cross-namespace Secrets and modify validatingwebhookconfigurations using the cleanup controller's ServiceAccount."}],"problemTypes":[{"descriptions":[{"lang":"en","description":"Incorrect Authorization","cweId":"CWE-863","type":"CWE"}]}],"affected":[{"vendor":"kyverno","product":"kyverno","defaultStatus":"unaffected","packageURL":"pkg:golang/github.com/kyverno/kyverno","versions":[{"version":"1.17.0","status":"affected","versionType":"semver","lessThan":"1.19.2"},{"version":"1.19.2","status":"unaffected","versionType":"semver"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:kyverno:kyverno:*:*:*:*:*:*:*:*","versionStartIncluding":"1.17.0","versionEndExcluding":"1.19.2"}]}]}],"metrics":[{"format":"CVSS","cvssV4_0":{"version":"4.0","vectorString":"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","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"HIGH","subIntegrityImpact":"HIGH","subAvailabilityImpact":"HIGH","baseScore":9.4,"baseSeverity":"CRITICAL"}},{"format":"CVSS","cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseScore":9.9,"baseSeverity":"CRITICAL"}}],"references":[{"url":"https://github.com/kyverno/kyverno/security/advisories/GHSA-p58h-r4j3-h5vx","tags":["vendor-advisory"],"name":"GitHub Security Advisory (GHSA-p58h-r4j3-h5vx)"},{"url":"https://github.com/kyverno/kyverno/security/advisories/GHSA-rcxg-3f92-3mgr","tags":["vendor-advisory"],"name":"GitHub Security Advisory (GHSA-rcxg-3f92-3mgr)"},{"name":"VulnCheck Advisory: Kyverno 1.17.0 before 1.19.2 Privilege Escalation via CleanupPolicy Context Loader","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/kyverno-1.17.0-before-1.19.2-privilege-escalation-via-cleanuppolicy-context-loader"}],"credits":[{"lang":"en","value":"euriconicacio","type":"finder"},{"lang":"en","value":"thevilledev","type":"finder"}],"x_generator":{"engine":"vulncheck-endgame"}}}}