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Incorrect Authorization in GitLab

Type: advisorySources: OSV

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 11.2 before 18.9.6, 18.10 before 18.10.4, and 18.11 before 18.11.1 that under certain conditions could have allowed an authenticated user with project owner permissions to bypass group fork prevention settings due to improper authorization checks.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2025-9957
Confirmed fixed CVEs
Not specified
Updated in this feed
3 Nov 2026, 01:21 UTC · Revision 1

Source evidence

Incorrect Authorization in GitLab

core-osv · Original source

Published 22 Apr 2026, 16:05 UTC

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 11.2 before 18.9.6, 18.10 before 18.10.4, and 18.11 before 18.11.1 that under certain conditions could have allowed an authenticated user with project owner permissions to bypass group fork prevention settings due to improper authorization checks.

osv:CVE-2025-9957
Complete source record
{
  "id": "0508e11468e342d9c958abcbc713d8cc8ce9fcf911dc196951c58bb48145b2e1",
  "url": "https://osv.dev/vulnerability/CVE-2025-9957",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Incorrect Authorization in GitLab",
    "summary": "GitLab has remediated an issue in GitLab CE/EE affecting all versions from 11.2 before 18.9.6, 18.10 before 18.10.4, and 18.11 before 18.11.1 that under certain conditions could have allowed an authenticated user with project owner permissions to bypass group fork prevention settings due to improper authorization checks.",
    "evidence": "osv:CVE-2025-9957",
    "products": [],
    "severity": "low",
    "structured": {
      "id": "CVE-2025-9957",
      "aliases": [
        "BIT-gitlab-2025-9957",
        "CVE-2025-9957"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://gitlab.com/gitlab-org/gitlab",
              "type": "GIT",
              "events": [
                {
                  "introduced": "44dbeccbe1039cb1d42d8502655ffb0bce3ae803"
                },
                {
                  "fixed": "48d537ce479485ffb6aef70f62ead88ac15e78b8"
                },
                {
                  "introduced": "57c08314af5bc8f317b1967330f92ed029e2c628"
                },
                {
                  "fixed": "2c4a87e00b3f5ab1eab353136020dfcab34ae6ca"
                },
                {
                  "introduced": "1060c7b0ff78be7c8abe8fd6d23dcb1ca493fd78"
                },
                {
                  "last_affected": "1060c7b0ff78be7c8abe8fd6d23dcb1ca493fd78"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*",
                    "range": [
                      {
                        "introduced": "11.2.0"
                      },
                      {
                        "fixed": "18.9.6"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*",
                    "range": [
                      {
                        "introduced": "11.2.0"
                      },
                      {
                        "fixed": "18.9.6"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*",
                    "range": [
                      {
                        "introduced": "18.10.0"
                      },
                      {
                        "fixed": "18.10.4"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*",
                    "range": [
                      {
                        "introduced": "18.10.0"
                      },
                      {
                        "fixed": "18.10.4"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:gitlab:gitlab:18.11.0:*:*:*:community:*:*:*",
                    "range": [
                      {
                        "introduced": "18.11.0"
                      },
                      {
                        "last_affected": "18.11.0"
                      }
                    ],
                    "source": "CPE_STRING"
                  },
                  {
                    "cpe": "cpe:2.3:a:gitlab:gitlab:18.11.0:*:*:*:enterprise:*:*:*",
                    "range": [
                      {
                        "introduced": "18.11.0"
                      },
                      {
                        "last_affected": "18.11.0"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "18.11.0",
            "v18.11.0-ee",
            "v18.10.2-ee",
            "v18.10.0-ee"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-9957.json"
          }
        }
      ],
      "modified": "2026-10-30T10:31:03.089479903Z",
      "provider": "osv",
      "references": [
        "https://about.gitlab.com/releases/2026/04/22/patch-release-gitlab-18-11-1-released/",
        "https://gitlab.com/gitlab-org/gitlab/-/work_items/567781",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/9xxx/CVE-2025-9957.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-9957",
        "https://hackerone.com/reports/3275222"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-863"
        ],
        "cna_assigner": "GitLab",
        "unresolved_ranges": [
          {
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "11.2"
                  },
                  {
                    "fixed": "18.9.6"
                  },
                  {
                    "introduced": "18.10"
                  },
                  {
                    "fixed": "18.10.4"
                  },
                  {
                    "introduced": "18.11"
                  },
                  {
                    "fixed": "18.11.1"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StandardRange"
              }
            ]
          },
          {
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "11.2"
                  },
                  {
                    "fixed": "18.9.6"
                  },
                  {
                    "introduced": "18.10"
                  },
                  {
                    "fixed": "18.10.4"
                  },
                  {
                    "introduced": "18.11"
                  },
                  {
                    "fixed": "18.11.1"
                  }
                ],
                "source": "DESCRIPTION"
              }
            ]
          }
        ],
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/9xxx/CVE-2025-9957.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-9957",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 491555,
  "published_at": "2026-04-22T16:05:16.304+00:00"
}