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CVE-2026-24513

Estado: AplazadaBaja (3.1)—

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.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Ingress Nginx — Ingress NginxAI

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2026-24513",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-24513",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-02-04T18:20:39.187137Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "jordan@liggitt.net",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 3.1,
          "attackVector": "NETWORK",
          "baseSeverity": "LOW",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
          "availabilityImpact": "NONE",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 1.4,
        "exploitabilityScore": 1.6
      }
    ]
  },
  "affected": [
    {
      "source": "jordan@liggitt.net",
      "affectedData": [
        {
          "repo": "https://github.com/kubernetes/ingress-nginx",
          "vendor": "Kubernetes",
          "product": "ingress-nginx",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "lessThan": "1.13.7",
              "versionType": "semver"
            },
            {
              "status": "affected",
              "version": "0",
              "lessThan": "1.14.3",
              "versionType": "semver"
            }
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-02-03T23:16:07.130",
  "references": [
    {
      "url": "https://github.com/kubernetes/kubernetes/issues/136679",
      "source": "jordan@liggitt.net"
    }
  ],
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "jordan@liggitt.net",
      "description": [
        {
          "lang": "en",
          "value": "CWE-754"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "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."
    },
    {
      "lang": "es",
      "value": "Se descubrió un problema de seguridad en ingress-nginx donde la protección ofrecida por la anotación Ingress 'auth-url' podría no ser efectiva en presencia de una configuración errónea específica.\n\nSi el controlador ingress-nginx está configurado con una configuración predeterminada de errores personalizados que incluye errores HTTP 401 o 403, y si el backend predeterminado de errores personalizados configurado es defectuoso y no respeta el encabezado HTTP X-Code, entonces se podría acceder a un Ingress con la anotación 'auth-url' incluso cuando la autenticación falla.\n\nTenga en cuenta que el backend de errores personalizados integrado funciona correctamente. Para activar este problema se requiere que un administrador configure específicamente ingress-nginx con un componente externo defectuoso."
    }
  ],
  "lastModified": "2026-06-17T10:23:10.467",
  "sourceIdentifier": "jordan@liggitt.net"
}