{"schema":"threatline.record/2","record":{"id":"CVE-2026-100704","aliases":["GHSA-5cjf-wwfg-pj4c"],"summary":"Kyverno before 1.19.1 ImageValidatingPolicy Exception Bypass","details":"Kyverno is a policy engine for Kubernetes. In versions 1.14.0 through 1.19.0, the ImageValidatingPolicy (policies.kyverno.io/v1beta1) evaluator never reads the spec.images and spec.allowedValues fields of a PolicyException. Any PolicyException whose policyRefs and matchConditions match a resource causes image signature verification to be skipped for the entire resource rather than only for the listed images or values, so an exception intended to exempt a single trusted image exempts every image on the matched resource(s). As a result, unsigned or untrusted images can be admitted to the cluster without signature verification. This differs from ValidatingPolicy, GeneratingPolicy, and MutatingPolicy, which treat the same field as a partial exemption. The issue is fixed in version 1.19.1.","categories":["Unclassified"],"product":"kyverno","vendor":"kyverno","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-100704","source_modified_at":"2026-09-28T14:50:36.275Z","fetched_at":"2026-10-23T18:52:38.922436Z","product":"kyverno","vendor":"kyverno","versions":[{"version":"1.14.0","status":"affected","versionType":"semver","lessThan":"1.19.1"},{"version":"1.19.1","status":"unaffected","versionType":"semver"}],"defaultStatus":"unaffected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-100704","source_modified_at":"2026-09-28T14:50:36.275Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"kyverno","ecosystem":null},"version":"1.19.1","basis":"first unaffected version stated in the CVE record"}],"cvss":8.3,"severity":"High","kev":{"listed":false},"epss":{"probability":0.00181,"percentile":0.07314,"score_date":"2026-10-23"},"published_at":"2026-09-26T13:23:59.326Z","modified_at":"2026-09-28T14:50:36.275Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-100704","fetched_at":"2026-10-23T18:52:38.922436Z","source_modified_at":"2026-09-28T14:50:36.275Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-100704","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://github.com/kyverno/kyverno/security/advisories/GHSA-5cjf-wwfg-pj4c","tags":["exploit"]},{"source":"CVE List","url":"https://www.vulncheck.com/advisories/kyverno-before-1.19.1-imagevalidatingpolicy-exception-bypass","tags":["third-party-advisory"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"poc","automatable":"no","technical_impact":"partial","assessed_at":"2026-09-28T14:50:12.818189Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-09-28T14:50:36.275Z","content_hash":"05e9e1647512a29d6ada270e4e9c14eb9aaf4ac5f5dbfa98cc5b162fc6056172"}}