{"cve":"CVE-2026-24513","nvd":{"published":"2026-02-03T23:16:07.130","modified":"2026-06-17T10:23:10.467","status":"Deferred","description":"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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N","score":3.1},"cwes":["CWE-754"],"references":["https://github.com/kubernetes/kubernetes/issues/136679"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:22:27.261130201+00:00"},"epss":{"cve":"CVE-2026-24513","score":0.00336,"percentile":0.27015,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-4g2f-xcph-2335","url":"https://osv.dev/vulnerability/GHSA-4g2f-xcph-2335","summary":"ingress-nginx has Improper Check for Unusual or Exceptional Conditions","modified":"2026-09-10T03:50:34.015338542Z","packages":[{"ecosystem":"Go","name":"k8s.io/ingress-nginx","purl":"pkg:golang/k8s.io/ingress-nginx","ranges":["<1.13.7"],"fixed":["1.13.7"]},{"ecosystem":"Go","name":"k8s.io/ingress-nginx","purl":"pkg:golang/k8s.io/ingress-nginx","ranges":[">=1.14.0 <1.14.3"],"fixed":["1.14.3"]}]},{"id":"GO-2026-4419","url":"https://osv.dev/vulnerability/GO-2026-4419","summary":"ingress-nginx has Improper Check for Unusual or Exceptional Conditions in k8s.io/ingress-nginx","modified":"2026-06-19T18:29:29.027873252Z","packages":[{"ecosystem":"Go","name":"k8s.io/ingress-nginx","purl":"pkg:golang/k8s.io/ingress-nginx","ranges":["all versions"],"fixed":[]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}