{"id":"CVE-2026-122312","published":"2026-11-05T03:17:23.653","lastModified":"2026-11-05T03:17:23.653","description":"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.","cvssScore":7.7,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N","cwes":["CWE-269"],"vendors":[],"products":[],"references":[{"url":"https://github.com/kyverno/kyverno/commit/f67231def576eb0ad153dd8cbfc836908ab14c14","tags":[]},{"url":"https://github.com/kyverno/kyverno/security/advisories/GHSA-pcx2-xcq4-65vf","tags":[]},{"url":"https://www.vulncheck.com/advisories/kyverno-1.19.1-before-1.19.2-namespace-isolation-bypass-via-apicall-urlpath-query-string","tags":[]}],"exploitRefs":[{"url":"https://github.com/kyverno/kyverno/commit/f67231def576eb0ad153dd8cbfc836908ab14c14","tags":[]},{"url":"https://github.com/kyverno/kyverno/security/advisories/GHSA-pcx2-xcq4-65vf","tags":[]}],"hasPoc":true,"ai":null}