{"id":"CVE-2026-122312","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-122312","summary":"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…","details":"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.","published":"2026-11-05T03:17:23.653","modified":"2026-11-05T03:17:23.653","cvss":{"score":7.7,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":{"url":"https://github.com/kyverno/kyverno/commit/f67231def576eb0ad153dd8cbfc836908ab14c14","label":"kyverno/kyverno@f67231d"},"references":[{"type":"WEB","url":"https://github.com/kyverno/kyverno/commit/f67231def576eb0ad153dd8cbfc836908ab14c14"},{"type":"WEB","url":"https://github.com/kyverno/kyverno/security/advisories/GHSA-pcx2-xcq4-65vf"},{"type":"WEB","url":"https://www.vulncheck.com/advisories/kyverno-1.19.1-before-1.19.2-namespace-isolation-bypass-via-apicall-urlpath-query-string"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-11-05T03:17:23.653"}}