{"id":"CVE-2026-41323","summary":"Kyverno: ServiceAccount token leaked to external servers via apiCall service URL","details":"Kyverno is a policy engine designed for cloud native platform engineering teams. Prior to versions 1.18.0-rc1, 1.17.2-rc1, and 1.16.4, Kyverno's apiCall feature in ClusterPolicy automatically attaches the admission controller's ServiceAccount token to outgoing HTTP requests. The service URL has no validation — it can point anywhere, including attacker-controlled servers. Since the admission controller SA has permissions to patch webhook configurations, a stolen token leads to full cluster compromise. Versions 1.18.0-rc1, 1.17.2-rc1, and 1.16.4 patch the issue.","aliases":["BIT-kyverno-2026-41323","GHSA-f9g8-6ppc-pqq4","GO-2026-5351"],"modified":"2026-07-08T08:13:12.750674568Z","published":"2026-04-24T03:21:36.265Z","related":["CGA-8q95-726m-78w5"],"database_specific":{"unresolved_ranges":[{"extracted_events":[{"introduced":"1.17.0-rc1"},{"fixed":"1.17.2-rc1"}],"source":"AFFECTED_FIELD"}],"cwe_ids":["CWE-200","CWE-918"],"cna_assigner":"GitHub_M","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/41xxx/CVE-2026-41323.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/41xxx/CVE-2026-41323.json"},{"type":"ADVISORY","url":"https://github.com/kyverno/kyverno/security/advisories/GHSA-f9g8-6ppc-pqq4"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-41323"},{"type":"FIX","url":"https://github.com/kyverno/kyverno/commit/bc4f91c4801b1eaa2edc0a14e2f1b0af8cf0c1f5"},{"type":"FIX","url":"https://github.com/kyverno/kyverno/commit/c2eab00033e635bda4e4efb58c1b472b41728bb6"},{"type":"FIX","url":"https://github.com/kyverno/kyverno/commit/f70e8ac1e7acd2e3844f9553e4a884f07f953de0"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/kyverno/kyverno","events":[{"introduced":"0"},{"fixed":"ead0a548e9b0e8746c6175abb53f8edff0aa5f1e"},{"introduced":"3e5e775669753daae01e280298f85b4604db9198"},{"fixed":"f64c0f5820a022d354c77316785d08511d2a5cc4"},{"fixed":"bc4f91c4801b1eaa2edc0a14e2f1b0af8cf0c1f5"},{"fixed":"c2eab00033e635bda4e4efb58c1b472b41728bb6"},{"fixed":"f70e8ac1e7acd2e3844f9553e4a884f07f953de0"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"1.16.4"},{"introduced":"1.17.0"},{"fixed":"1.17.2"}],"source":["CPE_RANGE","REFERENCES"],"cpe":["cpe:2.3:a:kyverno:kyverno:*:-:*:*:*:*:*:*","cpe:2.3:a:kyverno:kyverno:*:*:*:*:*:*:*:*"]}}],"versions":["v1.16.4-rc.1","kyverno-policies-chart-3.6.4-rc.1","kyverno-chart-3.6.4-rc.1","v1.17.2-rc.1","kyverno-policies-chart-3.7.2-rc.1","kyverno-chart-3.7.2-rc.1","v1.17.1","kyverno-policies-chart-3.7.1","kyverno-chart-3.7.1","v1.17.1-rc.1","kyverno-policies-chart-3.7.1-rc.1","kyverno-chart-3.7.1-rc.1","v1.16.3","kyverno-policies-chart-3.6.3","kyverno-chart-3.6.3","v1.17.0","kyverno-policies-chart-3.7.0","kyverno-chart-3.7.0","v1.16.3-rc.1","kyverno-policies-chart-3.6.3-rc.1","kyverno-chart-3.6.3-rc.1","v1.16.2","kyverno-policies-chart-3.6.2","kyverno-chart-3.6.2","v1.16.2-rc.1","kyverno-policies-chart-3.6.2-rc.1","kyverno-chart-3.6.2-rc.1","v1.16.1","kyverno-policies-chart-3.6.1","kyverno-chart-3.6.1","v1.16.1-rc.2","kyverno-policies-chart-3.6.1-rc.2","kyverno-chart-3.6.1-rc.2","v1.16.1-rc.1","kyverno-policies-chart-3.6.1-rc.1","kyverno-chart-3.6.1-rc.1","v1.16.0","kyverno-policies-chart-3.6.0","kyverno-chart-3.6.0","v1.16.0-rc.2","kyverno-policies-chart-3.6.0-rc.2","kyverno-chart-3.6.0-rc.2","v1.16.0-rc.1","kyverno-policies-chart-3.6.0-rc.1","kyverno-chart-3.6.0-rc.1","1.9-dev","1.8-dev","1.7-dev","test-dev","1.6-dev","helm-chart-v2.1.3","v1.5.0-rc1","helm-chart-v2.1.0","v1.4.3","helm-chart-v2.0.3","v1.4.3-rc2","helm-chart-v2.0.3-rc2","v1.4.3-rc1","helm-chart-v2.0.3-rc1","v1.4.2","v1.4.2-rc4","v1.4.2-rc3","v1.4.2-rc2","v1.4.2-rc1","v1.4.1","v1.4.0-rc4","v1.4.0","v1.4.0-rc3","v1.4.0-rc2","v1.4.0-rc1","v1.3.6","v1.3.6-rc5","v1.3.6-rc4","v1.3.6-rc3","v1.3.6-rc2","v1.3.6-rc1","v1.3.5","v1.3.5-rc5","v1.3.5-rc4","v1.3.5-rc3","v1.3.5-rc2","v1.3.5-rc1","v1.3.4","v1.3.4-rc1","v1.3.3","v1.3.2","v1.3.2-rc3","v1.3.2-rc2","v1.3.2-rc1","v1.3.1","v1.3.0","v1.3.0-rc12","v1.3.0-rc11","v1.3.0-rc10","1.3.0-rc10","v1.3.0-rc9","v1.3.0-rc8","v1.3.0-rc7","v1.3.0-rc6","v1.3.0-rc5","v1.3.0-rc4","v1.3.0-rc3","v1.3.0-rc2","v1.3.0-rc1","v1.2.1","v1.2.0","v1.1.12","v1.1.11","v1.1.10","v1.1.9","v1.1.8","v1.1.7","v1.1.7-rc4","v1.1.7-rc3","v1.1.7-rc2","v1.1.7-rc1","v1.1.6","v1.1.6-rc5","v1.1.6-rc4","v1.1.6-rc3","v1.1.6-rc2","v1.1.6-rc1","v1.1.5","v1.1.4","v1.1.4-rc1","v1.1.3","v1.1.3-rc1","v1.1.2","v1.1.1","v1.0.0","v1.0.0-rc1","v0.11.0","v0.10.0","v0.9.1","v0.9.0","v0.8.0","v0.7.1","v0.7.0","v0.5.0","v0.4.0","v0.3.0","v0.2.0","v0.1.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-41323.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N"}]}