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CVE-2025-12653

Estado: ModificadaMedia (6.5)—

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.3 before 18.4.5, 18.5 before 18.5.3, and 18.6 before 18.6.1 that under specific conditions could have allowed an unauthenticated user to join arbitrary organizations by changing headers on some requests.

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-2025-12653",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-12653",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2025-11-28T14:41:33.855824Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
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        "source": "cve@gitlab.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 6.5,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
          "integrityImpact": "LOW",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 2.5,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "cve@gitlab.com",
      "affectedData": [
        {
          "cpes": [
            "cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*"
          ],
          "repo": "git://git@gitlab.com:gitlab-org/gitlab.git",
          "vendor": "GitLab",
          "product": "GitLab",
          "versions": [
            {
              "status": "affected",
              "version": "18.3",
              "lessThan": "18.4.5",
              "versionType": "semver"
            },
            {
              "status": "affected",
              "version": "18.5",
              "lessThan": "18.5.3",
              "versionType": "semver"
            },
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              "status": "affected",
              "version": "18.6",
              "lessThan": "18.6.1",
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            }
          ],
          "defaultStatus": "unaffected"
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      ]
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  ],
  "published": "2025-11-26T20:15:49.023",
  "references": [
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      "url": "https://about.gitlab.com/releases/2025/11/26/patch-release-gitlab-18-6-1-released/",
      "source": "cve@gitlab.com"
    },
    {
      "url": "https://gitlab.com/gitlab-org/gitlab/-/issues/579372",
      "tags": [
        "Broken Link"
      ],
      "source": "cve@gitlab.com"
    },
    {
      "url": "https://hackerone.com/reports/3370245",
      "tags": [
        "Permissions Required"
      ],
      "source": "cve@gitlab.com"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "cve@gitlab.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-290"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.3 before 18.4.5, 18.5 before 18.5.3, and 18.6 before 18.6.1 that under specific conditions could have allowed an unauthenticated user to join arbitrary organizations by changing headers on some requests."
    }
  ],
  "lastModified": "2026-06-17T08:32:44.860",
  "configurations": [
    {
      "nodes": [
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          "negate": false,
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              "versionEndExcluding": "18.4.5",
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          "operator": "OR"
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  "sourceIdentifier": "cve@gitlab.com"
}