HIGH 8.3 NVD
CVE-2026-122312
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 p
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.
References
- https://github.com/kyverno/kyverno/commit/f67231def576eb0ad153dd8cbfc836908ab14c14
- https://github.com/kyverno/kyverno/security/advisories/GHSA-pcx2-xcq4-65vf
- https://www.vulncheck.com/advisories/kyverno-1.19.1-before-1.19.2-namespace-isolation-bypa
This high severity vulnerability with a CVSS score of 8.3 was published on 2026-11-05 via NVD.
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