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CVE-2021-22257

Estado: ModificadaMedia (5.3)—

Se ha detectado un problema en GitLab que afecta a todas las versiones a partir de la 14.0 anteriores a 14.0.9, todas las versiones a partir de la 14.1 anteriores a 14.1.4, todas las versiones a partir de la 14.2 anteriores a 14.2.2. La ruta para /user.keys no está restringida en las instancias con visibilidad pública deshabilitada. Esto permite una enumeración de usuarios en dichas instancias

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)

Gitlab — Gitlab

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2021-22257",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "cve@gitlab.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 5.3,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 1.4,
        "exploitabilityScore": 3.9
      },
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 5.3,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 1.4,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "cve@gitlab.com",
      "affectedData": [
        {
          "vendor": "GitLab",
          "product": "GitLab",
          "versions": [
            {
              "status": "affected",
              "version": ">=14.0, <14.0.9"
            },
            {
              "status": "affected",
              "version": ">=14.1, <14.1.4"
            },
            {
              "status": "affected",
              "version": ">=14.2, <14.2.2"
            }
          ]
        }
      ]
    }
  ],
  "published": "2021-10-05T14:15:07.570",
  "references": [
    {
      "url": "https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22257.json",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "cve@gitlab.com"
    },
    {
      "url": "https://gitlab.com/gitlab-org/gitlab/-/issues/23832",
      "tags": [
        "Broken Link"
      ],
      "source": "cve@gitlab.com"
    },
    {
      "url": "https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22257.json",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://gitlab.com/gitlab-org/gitlab/-/issues/23832",
      "tags": [
        "Broken Link"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "An issue has been discovered in GitLab affecting all versions starting from 14.0 before 14.0.9, all versions starting from 14.1 before 14.1.4, all versions starting from 14.2 before 14.2.2. The route for /user.keys is not restricted on instances with public visibility disabled. This allows user enumeration on such instances."
    },
    {
      "lang": "es",
      "value": "Se ha detectado un problema en GitLab que afecta a todas las versiones a partir de la 14.0 anteriores a 14.0.9, todas las versiones a partir de la 14.1 anteriores a 14.1.4, todas las versiones a partir de la 14.2 anteriores a 14.2.2. La ruta para /user.keys no está restringida en las instancias con visibilidad pública deshabilitada. Esto permite una enumeración de usuarios en dichas instancias"
    }
  ],
  "lastModified": "2026-06-17T03:36:53.940",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "7B16376E-DEE9-4CBA-BECA-072B6782A0BF",
              "versionEndExcluding": "14.0.9",
              "versionStartIncluding": "14.0.0"
            },
            {
              "criteria": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "A66113E2-D71B-4F05-9FB5-A06E01B832DE",
              "versionEndExcluding": "14.0.9",
              "versionStartIncluding": "14.0.0"
            },
            {
              "criteria": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "9A88A687-E3B3-43B3-87C6-489DF361D7D1",
              "versionEndExcluding": "14.1.4",
              "versionStartIncluding": "14.1.0"
            },
            {
              "criteria": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "B0917E00-8A8B-456B-8AF9-FEDE1B16079F",
              "versionEndExcluding": "14.1.4",
              "versionStartIncluding": "14.1.0"
            },
            {
              "criteria": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "3CE159DB-7F83-42A6-9527-EB372B1F0C12",
              "versionEndExcluding": "14.2.2",
              "versionStartIncluding": "14.2.0"
            },
            {
              "criteria": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "9748F8EA-2A15-4F22-8C54-5CA56B75EA58",
              "versionEndExcluding": "14.2.2",
              "versionStartIncluding": "14.2.0"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve@gitlab.com"
}