FKIE_CVE-2026-4342

Vulnerability from fkie_nvd - Published: 2026-03-19 22:16 - Updated: 2026-04-28 21:56
Severity ?
8.8 (High) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.8 (High) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
A security issue was discovered in ingress-nginx where a combination of Ingress annotations can be used to inject configuration into nginx. This can lead to arbitrary code execution in the context of the ingress-nginx controller, and disclosure of Secrets accessible to the controller. (Note that in the default installation, the controller can access all Secrets cluster-wide.)
References
jordan@liggitt.nethttps://github.com/kubernetes/kubernetes/issues/137893Issue Tracking
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2026/03/19/9Mailing List, Third Party Advisory
Impacted products
Vendor Product Version
kubernetes ingress-nginx *
kubernetes ingress-nginx *
kubernetes ingress-nginx 1.15.0
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:kubernetes:ingress-nginx:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "23B3479B-AC96-4030-B316-092C960ED35E",
              "versionEndExcluding": "1.13.9",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:kubernetes:ingress-nginx:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "D6D03CA5-E80B-4DD0-BF44-C65F6135C764",
              "versionEndExcluding": "1.14.5",
              "versionStartIncluding": "1.14.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:kubernetes:ingress-nginx:1.15.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "EABC32AB-164B-4982-AD54-B5D66D5989E3",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A security issue was discovered in ingress-nginx where a combination of Ingress annotations can be used to inject configuration into nginx. This can lead to arbitrary code execution in the context of the ingress-nginx controller, and disclosure of Secrets accessible to the controller. (Note that in the default installation, the controller can access all Secrets cluster-wide.)"
    },
    {
      "lang": "es",
      "value": "Se descubri\u00f3 un problema de seguridad en ingress-nginx donde una combinaci\u00f3n de anotaciones de Ingress puede utilizarse para inyectar configuraci\u00f3n en nginx. Esto puede conducir a la ejecuci\u00f3n de c\u00f3digo arbitrario en el contexto del controlador ingress-nginx, y a la divulgaci\u00f3n de Secrets accesibles para el controlador. (Tenga en cuenta que en la instalaci\u00f3n predeterminada, el controlador puede acceder a todos los Secrets a nivel de cl\u00faster.)"
    }
  ],
  "id": "CVE-2026-4342",
  "lastModified": "2026-04-28T21:56:05.017",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 8.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 5.9,
        "source": "jordan@liggitt.net",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 8.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2026-03-19T22:16:43.143",
  "references": [
    {
      "source": "jordan@liggitt.net",
      "tags": [
        "Issue Tracking"
      ],
      "url": "https://github.com/kubernetes/kubernetes/issues/137893"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ],
      "url": "http://www.openwall.com/lists/oss-security/2026/03/19/9"
    }
  ],
  "sourceIdentifier": "jordan@liggitt.net",
  "vulnStatus": "Undergoing Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        }
      ],
      "source": "jordan@liggitt.net",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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