EUVD-2026-29551

Insufficient ownership checks in clientarea.php allow an authenticated client area user to submit requests using another user’s addonId without any ownership validation leading to unauthorized access to the victim's resources and their cPanel account...

CVE-2026-29204

Insufficient ownership check in clientarea.php allows an authenticated client area user to submit requests using another user’s addonId without any ownership validation leading to unauthorized access to the victim's account...

CVE-2026-29204

Insufficient ownership check in clientarea.php allows an authenticated client area user to submit requests using another user’s addonId without any ownership validation leading to unauthorized access to the victim's account...

CVE-2026-29204

Insufficient ownership check in clientarea.php allows an authenticated client area user to submit requests using another user’s addonId without any ownership validation leading to unauthorized access to the victim's account...

PT-2026-40319

Name of the Vulnerable Software and Affected Versions WHMCS versions 7.4 through 8.13.2 WHMCS versions 9.0 through 9.0.3 Description Insufficient ownership checks in the 'clientarea.php' endpoint allow an authenticated client area user to submit requests using another user's addonId without...