[ CVE-2026-122304 · Published 5 Nov 2026 ]
Vulnerability in kyverno
CVSS 9.9
No fix listed yet
[ Why it matters ]Priority signals
- Critical severity: CVSS 9.9
[ Description ]Official description
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.
[ Fixes ]Fixes and patches
No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.