CVE-2026-24513 (GCVE-0-2026-24513)
Vulnerability from cvelistv5
Published
2026-02-03 22:17
Modified
2026-02-18 17:29
CWE
  • CWE-754 - Improper Check for Unusual or Exceptional Conditions
Summary
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. 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. 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.
Impacted products
Vendor Product Version
Kubernetes ingress-nginx Version: 0   
Version: 0   
Create a notification for this product.
Show details on NVD website


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                "timestamp": "2026-02-04T18:20:39.187137Z",
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          "value": "Aurelia Schittler"
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          "url": "https://github.com/kubernetes/kubernetes/issues/136679"
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      "source": {
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      "title": "ingress-nginx auth-url protection bypass",
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    "dateReserved": "2026-01-23T06:54:35.913Z",
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