[ CVE-2026-122321 · Published 5 Nov 2026 ]
Vulnerability in kyverno
CVSS 9.1
No fix listed yet
[ Why it matters ]Priority signals
- Critical severity: CVSS 9.1
[ Description ]Official description
Kyverno 1.18.0 before 1.19.2 contains a signature verification bypass in verifyImages because cached verification results are keyed by the image reference string (such as a tag) rather than bound to the verified digest, so cache hits skip signature and attestation checks. An attacker who can submit workloads and move a registry tag can warm the cache with a signed image, repoint the tag, and have Kyverno admit the workload and use mutateDigest to pin the unverified digest.
[ 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.