Incorrect Authorization in GitLab

{
  "id": "29a43b454b6031023a762e578279fbf0521e447ddad90bf1586bea5decdb57c7",
  "url": "https://osv.dev/vulnerability/CVE-2025-1540",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Incorrect Authorization in GitLab",
    "summary": "An issue has been discovered in GitLab CE/EE for Self-Managed and Dedicated instances affecting all versions from 17.5 prior to 17.6.5, 17.7 prior to 17.7.4, and 17.8 prior to 17.8.2. It was possible for a user added as an External to read and clone internal projects under certain circumstances.\"",
    "evidence": "osv:CVE-2025-1540",
    "products": [],
    "severity": "low",
    "structured": {
      "id": "CVE-2025-1540",
      "aliases": [
        "BIT-gitlab-2025-1540",
        "CVE-2025-1540"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://gitlab.com/gitlab-org/gitlab",
              "type": "GIT",
              "events": [
                {
                  "introduced": "173959793c1163052d16c2158773ea9504aa712e"
                },
                {
                  "fixed": "53bac28a6c50e5c1efa8b8d2520b24f32993682f"
                },
                {
                  "introduced": "1fd574ee5710155adf5307fba45132264dcb64a1"
                },
                {
                  "fixed": "fd7fac14bde2a6aede8d3d68558c4761364e13df"
                },
                {
                  "introduced": "f03594b9e09b648c839e9c008286a24c93c82373"
                },
                {
                  "fixed": "290b47ded8be87247276edd4d9117662c70366c3"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*",
                    "range": [
                      {
                        "introduced": "17.5.0"
                      },
                      {
                        "fixed": "17.6.5"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*",
                    "range": [
                      {
                        "introduced": "17.5.0"
                      },
                      {
                        "fixed": "17.6.5"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*",
                    "range": [
                      {
                        "introduced": "17.7.0"
                      },
                      {
                        "fixed": "17.7.4"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*",
                    "range": [
                      {
                        "introduced": "17.7.0"
                      },
                      {
                        "fixed": "17.7.4"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*",
                    "range": [
                      {
                        "introduced": "17.8.0"
                      },
                      {
                        "fixed": "17.8.2"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*",
                    "range": [
                      {
                        "introduced": "17.8.0"
                      },
                      {
                        "fixed": "17.8.2"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v17.8.0-ee",
            "v17.7.0-ee",
            "v17.7.2-ee"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-1540.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:39.501779032Z",
      "provider": "osv",
      "references": [
        "https://about.gitlab.com/releases/2025/02/12/patch-release-gitlab-17-8-2-released/#saml-authentication-misconfigures-external-user-attribute",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/1xxx/CVE-2025-1540.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-1540",
        "https://gitlab.com/gitlab-org/gitlab/-/issues/512765"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-863"
        ],
        "cna_assigner": "GitLab",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/1xxx/CVE-2025-1540.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-1540",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 507033,
  "published_at": "2025-03-06T08:31:07.791+00:00"
}