
Proof-of-concept exploit for CVE-2026-37064: unauthenticated user enumeration in Veno File Manager 4.4.9 via crafted POST request to /vfm-admin/ajax/usr-check.php.
User enumeration in /vfm-admin/ajax/usr-check.php in Veno File Manager Project 4.4.9 allows an unauthenticated attacker to enumerate the application users via sending a specially crafted POST request to the affected endpoint with a chosen 'user_name' parameter to test if the user exists.
https://github.com/user-attachments/assets/441bc65c-5fce-4164-896d-ec920e95312c