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CVE-2021-21626

Estado: ModificadaMedia (4.3)—

Jenkins Warnings Next Generation Plugin 8.4.4 and earlier does not perform a permission check in methods implementing form validation, allowing attackers with Item/Read permission but without Item/Workspace or Item/Configure permission to check whether attacker-specified file patterns match workspace contents.

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)

Jenkins — Warnings Next Generation

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2021-21626",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 4,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:S/C:N/I:P/A:N",
          "authentication": "SINGLE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 4.3,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N",
          "integrityImpact": "LOW",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 1.4,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "jenkinsci-cert@googlegroups.com",
      "affectedData": [
        {
          "vendor": "Jenkins project",
          "product": "Jenkins Warnings Next Generation Plugin",
          "versions": [
            {
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom",
              "lessThanOrEqual": "8.4.4"
            },
            {
              "status": "unaffected",
              "version": "8.4.3.1"
            }
          ]
        }
      ]
    }
  ],
  "published": "2021-03-18T14:15:13.490",
  "references": [
    {
      "url": "http://www.openwall.com/lists/oss-security/2021/03/18/5",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "jenkinsci-cert@googlegroups.com"
    },
    {
      "url": "https://www.jenkins.io/security/advisory/2021-03-18/#SECURITY-2041",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "jenkinsci-cert@googlegroups.com"
    },
    {
      "url": "http://www.openwall.com/lists/oss-security/2021/03/18/5",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://www.jenkins.io/security/advisory/2021-03-18/#SECURITY-2041",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-862"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Jenkins Warnings Next Generation Plugin 8.4.4 and earlier does not perform a permission check in methods implementing form validation, allowing attackers with Item/Read permission but without Item/Workspace or Item/Configure permission to check whether attacker-specified file patterns match workspace contents."
    },
    {
      "lang": "es",
      "value": "Jenkins Warnings Next Generation Plugin versiones 8.4.4 y anteriores, no lleva a cabo una comprobación de permisos en los métodos que implementan una validación de formularios, permitiendo a atacantes con permiso Item/Read pero sin permiso Item/Workspace o Item/Configure para comprobar si los patrones de archivo especificados por el atacante coinciden con el contenido del espacio de trabajo"
    }
  ],
  "lastModified": "2026-06-17T03:35:53.713",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:jenkins:warnings_next_generation:*:*:*:*:*:jenkins:*:*",
              "vulnerable": true,
              "matchCriteriaId": "3B3A8B18-5768-40BA-A04D-AE51F883A0B9",
              "versionEndIncluding": "8.4.4"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "jenkinsci-cert@googlegroups.com"
}