CVE-2026-3139: Cozmoslabs User Profile Builder – Beautiful User Registration Forms, User Profiles & User Role Editor

Medium severity, CVSS 4.3. EPSS: 0.3% chance of exploitation in the next 30 days.

The User Profile Builder – Beautiful User Registration Forms, User Profiles & User Role Editor plugin for WordPress is vulnerable to Insecure Direct Object Reference in versions up to, and including, 3.15.5 via the wppb_save_avatar_value() function due to missing validation on a user controlled key. This makes it possible for authenticated attackers, with subscriber-level access and above, to reassign ownership of arbitrary posts and attachments by changing 'post_author'.

Affected products

• Cozmoslabs User Profile Builder – Beautiful User Registration Forms, User Profiles & User Role Editor: up to and including 3.15.5

Published 2026-03-31. Last modified 2026-07-25.