{"id":"BIT-kyverno-2026-100704","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.","aliases":["CVE-2026-100704","GHSA-5cjf-wwfg-pj4c"],"modified":"2026-10-01T10:10:53.233496842Z","published":"2026-10-01T09:26:24.560Z","database_specific":{"severity":"High","cpes":["cpe:2.3:a:kyverno:kyverno:*:*:*:*:*:go:*:*"]},"references":[{"type":"WEB","url":"https://github.com/kyverno/kyverno/security/advisories/GHSA-5cjf-wwfg-pj4c"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-100704"},{"type":"WEB","url":"https://www.vulncheck.com/advisories/kyverno-before-1.19.1-imagevalidatingpolicy-exception-bypass"}],"affected":[{"package":{"name":"kyverno","ecosystem":"Bitnami","purl":"pkg:bitnami/kyverno"},"ranges":[{"type":"SEMVER","events":[{"introduced":"1.14.0"},{"fixed":"1.19.1"}]}],"database_specific":{"source":"https://github.com/bitnami/vulndb/tree/main/data/kyverno/BIT-kyverno-2026-100704.json"},"severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"}]}],"schema_version":"1.9.0"}