{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-122312","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","state":"PUBLISHED","assignerShortName":"VulnCheck","dateReserved":"2026-11-04T23:25:07.316Z","datePublished":"2026-11-05T02:25:14.338Z","dateUpdated":"2026-11-05T02:25:14.338Z"},"containers":{"cna":{"providerMetadata":{"orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","shortName":"VulnCheck","dateUpdated":"2026-11-05T02:25:14.338Z"},"datePublic":"2026-10-21T00:00:00.000Z","title":"Kyverno 1.19.1 before 1.19.2 Namespace Isolation Bypass via APICall URLPath Query String","descriptions":[{"lang":"en","value":"Kyverno from 1.19.1 before 1.19.2 contains a namespace isolation bypass in APICall Fetch() in pkg/engine/apicall/apiCall.go because path.Clean treats '?' as a path character, letting the namespace regex match segments inside the query string. Users who can create namespaced policies can supply a URLPath like /api/v1/nodes?x=/namespaces/default/ that passes validation while client-go requests the cluster-scoped endpoint, reading resources outside their namespace."}],"problemTypes":[{"descriptions":[{"lang":"en","description":"Improper Privilege Management","cweId":"CWE-269","type":"CWE"}]}],"affected":[{"vendor":"kyverno","product":"kyverno","defaultStatus":"unaffected","versions":[{"version":"1.19.1","status":"affected","versionType":"semver","lessThan":"1.19.2"},{"version":"1.19.2","status":"unaffected","versionType":"semver"}],"packageURL":"pkg:golang/github.com/kyverno/kyverno"}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:kyverno:kyverno:*:*:*:*:*:*:*:*","versionEndExcluding":"1.19.2","versionStartIncluding":"1.19.1"}]}]}],"metrics":[{"cvssV4_0":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":8.3,"baseSeverity":"HIGH","exploitMaturity":"NOT_DEFINED","privilegesRequired":"LOW","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"HIGH","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"NONE","vulnerabilityResponseEffort":"NOT_DEFINED"},"format":"CVSS"},{"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"},"format":"CVSS"}],"references":[{"url":"https://github.com/kyverno/kyverno/security/advisories/GHSA-pcx2-xcq4-65vf","tags":["vendor-advisory"],"name":"GitHub Security Advisory (GHSA-pcx2-xcq4-65vf)"},{"url":"https://github.com/kyverno/kyverno/commit/f67231def576eb0ad153dd8cbfc836908ab14c14","tags":["patch"],"name":"Patch Commit"},{"name":"VulnCheck Advisory: Kyverno 1.19.1 before 1.19.2 Namespace Isolation Bypass via APICall URLPath Query String","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/kyverno-1.19.1-before-1.19.2-namespace-isolation-bypass-via-apicall-urlpath-query-string"}],"credits":[{"lang":"en","value":"aradcohAkamai","type":"finder"}],"x_generator":{"engine":"vulncheck-endgame"}}}}