{"id":"CVE-2026-84200","title":"Kyverno versions v1.9.0 through v1.12.7 contain a policy exception handling flaw","summary":"Kyverno versions v1.9.0 through v1.12.7 contain a policy exception handling flaw. When a policy in enforce mode is combined with two PolicyExceptions, the less restrictive exception takes precedence, allowing an attacker to bypass the po…","severity":"critical","cvss":9,"cvssVector":"CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","cwe":["CWE-284"],"vendor":"kyverno","product":"github.com/kyverno/kyverno","affected":["github.com/kyverno/kyverno >= 1.9.0, < 1.13.0"],"patched":["github.com/kyverno/kyverno 1.13.0"],"published":"2026-09-01","updated":"2026-09-10","sourceUpdated":"2026-09-10T15:43:03.760","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-84200","references":[{"url":"https://github.com/kyverno/kyverno/security/advisories/GHSA-gg4x-fgg2-h9w9","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/kyverno-before-1.13.0-policy-bypass-via-multiple-exceptions","label":"disclosure@vulncheck.com"},{"url":"https://github.com/kyverno/kyverno/security/advisories/GHSA-gg4x-fgg2-h9w9","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"},{"url":"https://github.com/kyverno/kyverno"}],"tags":["nvd","osv","go"],"epss":0.00179,"epssPercentile":0.07671,"aliases":["GHSA-gg4x-fgg2-h9w9","GO-2026-4285"],"ecosystem":"go","ingestedAt":"2026-09-02T19:31:26.830Z","slug":"CVE-2026-84200","body":"## Overview\n\nKyverno versions v1.9.0 through v1.12.7 contain a policy exception handling flaw. When a policy in enforce mode is combined with two PolicyExceptions, the less restrictive exception takes precedence, allowing an attacker to bypass the policy by crafting a resource name that matches the second exception's name pattern (e.g., '*ingress*'). This can be used to circumvent policies such as one blocking hostPath volumes. Fixed in v1.13.0.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Package advisory (CVE-2026-84200)\n\nAffected packages:\n\n- `github.com/kyverno/kyverno >= 1.9.0, < 1.13.0`\n\nPatched in:\n\n- `github.com/kyverno/kyverno 1.13.0`\n\nSource: https://osv.dev/vulnerability/GHSA-gg4x-fgg2-h9w9","depth":"midnight","depthScore":50,"depthScoreParts":{"impact":49.5,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}