{"affected":[{"defaultStatus":"unaffected","product":"kyverno","source":"CNA: VulnCheck","vendor":"kyverno","versions":[{"lessThan":"1.19.2","status":"affected","version":"1.18.0","versionType":"semver"},{"status":"unaffected","version":"1.19.2","versionType":"semver"}]}],"cveId":"CVE-2026-122321","cwes":["CWE-367"],"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.","epss":null,"exploits":[],"kev":null,"metrics":[{"score":8.5,"severity":"high","source":"CNA: VulnCheck","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:L/SC:L/SI:H/SA:L","version":"4.0"},{"score":9.1,"severity":"critical","source":"CNA: VulnCheck","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:L","version":"3.1"}],"modifiedAt":1793845520000,"publishedAt":1793845520000,"references":[{"source":"CNA: VulnCheck","tags":["vendor-advisory"],"url":"https://github.com/kyverno/kyverno/security/advisories/GHSA-2r43-6962-xcw5"},{"source":"CNA: VulnCheck","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/kyverno-1.18.0-before-1.19.2-verifyimages-cache-signature-verification-bypass"}],"remediation":[],"revision":"6da7447cfe23c4ad36554ad196f3492522b18b79ad82dd5603cf43ef125860f9","sources":[{"modifiedAt":1793845520000,"name":"CNA: VulnCheck","retrievedAt":1793848174733,"url":"https://www.cve.org/CVERecord?id=CVE-2026-122321"}],"ssvc":null,"status":"published","title":"Kyverno 1.18.0 before 1.19.2 verifyImages Cache Signature Verification Bypass","updatedAt":1793848174733}