{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-24513","assignerOrgId":"a6081bf6-c852-4425-ad4f-a67919267565","state":"PUBLISHED","assignerShortName":"kubernetes","dateReserved":"2026-01-23T06:54:35.913Z","datePublished":"2026-02-03T22:17:17.315Z","dateUpdated":"2026-02-18T17:29:42.496Z"},"containers":{"cna":{"affected":[{"defaultStatus":"affected","product":"ingress-nginx","repo":"https://github.com/kubernetes/ingress-nginx","vendor":"Kubernetes","versions":[{"lessThan":"1.13.7","status":"affected","version":"0","versionType":"semver"},{"lessThan":"1.14.3","status":"affected","version":"0","versionType":"semver"}]}],"datePublic":"2026-02-02T14:00:00.000Z","descriptions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"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.<br>If 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.<br>Note 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."}],"value":"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."}],"impacts":[{"capecId":"CAPEC-115","descriptions":[{"lang":"en","value":"CAPEC-115 Authentication Bypass"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":3.1,"baseSeverity":"LOW","confidentialityImpact":"LOW","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N","version":"3.1"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-754","description":"CWE-754 Improper Check for Unusual or Exceptional Conditions","lang":"en","type":"CWE"}]}],"providerMetadata":{"orgId":"a6081bf6-c852-4425-ad4f-a67919267565","shortName":"kubernetes","dateUpdated":"2026-02-18T17:29:42.496Z"},"references":[{"url":"https://github.com/kubernetes/kubernetes/issues/136679"}],"credits":[{"lang":"en","value":"Aurelia Schittler","type":"finder"}],"source":{"discovery":"UNKNOWN"},"title":"ingress-nginx auth-url protection bypass","x_generator":{"engine":"Vulnogram 0.5.0"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-02-04T18:20:39.187137Z","id":"CVE-2026-24513","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-02-04T18:21:14.824Z"}}]}}