1.18.0 before 1.19.2 verifyImages Cache Signature Verification Bypass
Not on CISA's list of exploited flaws, and not in the news we track.
9.1of 10, critical
Fix it in your code
Each opens with a short prompt that points at Global Hack Map's public runbook for CVE-2026-122321. Nothing runs until you send it.
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.