{"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"}}}}

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