{"schema_version":"1.9.0","id":"CVE-2026-24513","published":"2026-02-03T22:17:17.315Z","modified":"2026-08-12T03:51:08.260253412Z","aliases":["GHSA-4g2f-xcph-2335","GO-2026-4419"],"related":["CGA-hcq8-cgv2-2246","SUSE-SU-2026:0403-1","openSUSE-SU-2026:21483-1"],"summary":"ingress-nginx auth-url protection bypass","details":"A security issue was discovered in ingress-nginx where the protection afforded by the `auth-url` Ingress annotation may not be effective in the presence of a specific misconfiguration.\n\nIf the ingress-nginx controller is configured with a default custom-errors configuration that includes HTTP errors 401 or 403, and if the configured default custom-errors backend is defective and fails to respect the X-Code HTTP header, then an Ingress with the `auth-url` annotation may be accessed even when authentication fails.\n\nNote that the built-in custom-errors backend works correctly. To trigger this issue requires an administrator to specifically configure ingress-nginx with a broken external component.","affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/kubernetes/ingress-nginx","events":[{"introduced":"0"},{"fixed":"36800fca611890717cfcbc843a682745a2dfb58a"},{"fixed":"451747c70c6fca688e157a8329a3dd219a234fd9"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"1.13.7"},{"fixed":"1.14.3"}],"source":"AFFECTED_FIELD"}}],"versions":["helm-chart-4.13.6","controller-v1.13.6","helm-chart-4.14.2","controller-v1.14.2","helm-chart-4.13.5","controller-v1.13.5","helm-chart-4.14.1","controller-v1.14.1","helm-chart-4.13.4","controller-v1.13.4","helm-chart-4.14.0","controller-v1.14.0","helm-chart-4.13.3","controller-v1.13.3","helm-chart-4.13.2","controller-v1.13.2","helm-chart-4.13.1","controller-v1.13.1","helm-chart-4.13.0","controller-v1.13.0","helm-chart-4.11.0","controller-v1.11.0","controller-v1.10.1","helm-chart-4.10.0","controller-v1.10.0","helm-chart-4.9.1","helm-chart-4.9.0","controller-v1.9.5","helm-chart-4.8.3","controller-v1.9.4","helm-chart-4.8.2","controller-v1.9.3","helm-chart-4.8.1","controller-v1.9.1","helm-chart-4.8.0","controller-v1.9.0-beta.0","helm-chart-4.8.0-beta.0","helm-chart-4.7.2","helm-chart-4.7.1","helm-chart-4.7.0","controller-v1.8.0","helm-chart-4.6.1","controller-v1.7.1","helm-chart-4.6.0","controller-v1.7.0","helm-chart-4.5.2","controller-v1.6.4","helm-chart-4.5.0","helm-chart-4.4.2","helm-chart-4.4.0","controller-v1.5.1","helm-chart-4.3.0","controller-v1.4.0","helm-chart-4.2.5","controller-v1.3.1","helm-chart-4.2.4","helm-chart-4.2.3","helm-chart-4.2.2","helm-chart-4.2.1","helm-chart-4.2.0","controller-v1.3.0","helm-chart-4.1.4","helm-chart-4.1.3","controller-v1.2.1","helm-chart-4.1.2","helm-chart-4.1.1","helm-chart-4.1.0","controller-v1.2.0","helm-chart-4.1.0-beta.1","controller-v1.2.0-beta.1","controller-v1.2.0-beta.0","helm-chart-4.1.0-beta.0","helm-chart-4.0.19","controller-v1.1.3","helm-chart-4.0.18","controller-v1.1.2","helm-chart-4.0.17","helm-chart-4.0.16","helm-chart-4.0.15","controller-v1.1.1","helm-chart-4.0.13","helm-chart-4.0.12","helm-chart-4.0.11","helm-chart-4.0.10","controller-v1.1.0","helm-chart-4.0.9","helm-chart-4.0.8","helm-chart-4.0.7","controller-v1.0.5","helm-chart-4.0.6","controller-v1.0.4","helm-chart-4.0.5","helm-chart-4.0.4","controller-v1.0.3","helm-chart-4.0.3","controller-v1.0.2","helm-chart-4.0.2","controller-v1.0.1","helm-chart-4.0.1","controller-v1.0.0","helm-chart-3.36.0","controller-v0.49.0","helm-chart-3.35.0","controller-v0.48.1","helm-chart-3.34.0","controller-v0.47.0","helm-chart-3.33.0","helm-chart-3.32.0","helm-chart-3.31.0","helm-chart-3.30.0","controller-v0.46.0","helm-chart-3.29.0","helm-chart-3.28.0","controller-v0.45.0","helm-chart-3.27.0","helm-chart-3.26.0","helm-chart-3.24.0","helm-chart-3.25.0","controller-v0.44.0","helm-chart-3.23.0","helm-chart-3.22.0","helm-chart-3.21.0","helm-chart-3.20.1","helm-chart-3.20.0","controller-v0.42.0","controller-v0.43.0","helm-chart-3.19.0","helm-chart-3.18.0","helm-chart-3.17.0","helm-chart-3.16.1","helm-chart-3.16.0","ingress-nginx-3.15.2","ingress-nginx-3.15.1","ingress-nginx-3.15.0","ingress-nginx-3.13.0","ingress-nginx-3.12.0","ingress-nginx-3.11.1","ingress-nginx-3.11.0","controller-v0.41.2","ingress-nginx-3.10.1","controller-v0.41.1","ingress-nginx-3.10.0","ingress-nginx-3.9.0","ingress-nginx-3.8.0","controller-v0.41.0","ingress-nginx-3.7.1","ingress-nginx-3.4.1","ingress-nginx-3.7.0","ingress-nginx-3.6.0","ingress-nginx-3.5.1","ingress-nginx-3.5.0","controller-v0.40.2","ingress-nginx-3.4.0","controller-v0.40.1","ingress-nginx-3.3.1","controller-v0.40.0","ingress-nginx-3.3.0","ingress-nginx-3.2.0","ingress-nginx-3.1.0","ingress-nginx-3.0.0","ingress-nginx-2.16.0","ingress-nginx-2.15.0","ingress-nginx-2.14.0","ingress-nginx-2.13.0","controller-v0.35.0","ingress-nginx-2.12.1","ingress-nginx-2.12.0","ingress-nginx-2.11.3","ingress-nginx-2.11.2","controller-v0.34.1","ingress-nginx-2.11.1","ingress-nginx-2.11.0","controller-v0.34.0","ingress-nginx-2.10.0","ingress-nginx-2.9.1","ingress-nginx-2.9.0","ingress-nginx-2.8.0","ingress-nginx-2.7.1","ingress-nginx-2.7.0","ingress-nginx-2.6.0","ingress-nginx-2.5.0","ingress-nginx-2.4.0","ingress-nginx-2.0.3","ingress-nginx-2.3.0","ingress-nginx-2.2.0","ingress-nginx-2.1.0","ingress-nginx-2.0.2","ingress-nginx-2.0.1","ingress-nginx-2.0.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-24513.json"}}],"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/24xxx/CVE-2026-24513.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-24513"},{"type":"REPORT","url":"https://github.com/kubernetes/kubernetes/issues/136679"},{"type":"PACKAGE","url":"https://github.com/kubernetes/ingress-nginx"}],"database_specific":{"cna_assigner":"kubernetes","cwe_ids":["CWE-754"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/24xxx/CVE-2026-24513.json"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N"}]}