Authentication Bypass Using an Alternate Path or Channel in GitLab

{
  "id": "cc71d735087013152818d0dd5b3ac1e6017d86c1e92c7584750aa03475c46a2a",
  "url": "https://osv.dev/vulnerability/CVE-2025-0549",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Authentication Bypass Using an Alternate Path or Channel in GitLab",
    "summary": "An issue has been discovered in GitLab CE/EE affecting all versions starting from 17.3 prior to 17.9.8, from 17.10 prior to 17.10.6, and from 17.11 prior to 17.11.2. A security vulnerability allows attackers to bypass Device OAuth flow protections, enabling authorization form submission through minimal user interaction.",
    "evidence": "osv:CVE-2025-0549",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2025-0549",
      "aliases": [
        "BIT-gitlab-2025-0549",
        "CVE-2025-0549"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://gitlab.com/gitlab-org/gitlab",
              "type": "GIT",
              "events": [
                {
                  "introduced": "5aad128b1defa01641e69fdcd5a2ec16bd1d4c2c"
                },
                {
                  "fixed": "610a89e5348b7d0e5e0955e04372fcd583fbac06"
                },
                {
                  "introduced": "ef8041bebeac4b902db1666c582a3de1d495ae39"
                },
                {
                  "fixed": "cde687530d9e34029806d689bbe6e6cd566bbafc"
                },
                {
                  "introduced": "b7c061ce59a5eca5c5764fcf61be8a5103fb7d55"
                },
                {
                  "fixed": "86b7032203f889edf597c88c37809b07e2ca1a8f"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*",
                    "range": [
                      {
                        "introduced": "17.3.0"
                      },
                      {
                        "fixed": "17.9.8"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*",
                    "range": [
                      {
                        "introduced": "17.3.0"
                      },
                      {
                        "fixed": "17.9.8"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*",
                    "range": [
                      {
                        "introduced": "17.10.0"
                      },
                      {
                        "fixed": "17.10.6"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*",
                    "range": [
                      {
                        "introduced": "17.10.0"
                      },
                      {
                        "fixed": "17.10.6"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*",
                    "range": [
                      {
                        "introduced": "17.11.0"
                      },
                      {
                        "fixed": "17.11.2"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*",
                    "range": [
                      {
                        "introduced": "17.11.0"
                      },
                      {
                        "fixed": "17.11.2"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v17.11.0-ee",
            "v17.10.0-ee",
            "v17.10.2-ee",
            "v17.10.3-ee"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-0549.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:34.328670424Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/0xxx/CVE-2025-0549.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-0549",
        "https://gitlab.com/gitlab-org/gitlab/-/issues/513996",
        "https://hackerone.com/reports/2927555"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-288"
        ],
        "cna_assigner": "GitLab",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/0xxx/CVE-2025-0549.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-0549",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 501295,
  "published_at": "2025-05-09T16:13:23.86+00:00"
}