Vulnerability · Published Mar 31, 2026 · Assigned by Wordfence
CVE-2026-3139User Profile Builder – Beautiful User Registration Forms, User Profiles & User Role Editor <= 3.15.5 - Insecure Direct Object Reference to Authenticated (Subscriber+) Arbitrary Post Author Reassignment via Avatar Field
Medium 4.3
In plain English
A medium-severity authorization bypass via user-controlled key in User Profile Builder – Beautiful User Registration Forms, User Profiles & User Role Editor from cozmoslabs. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 7% of all known vulnerabilities).
Official description
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 (as reported)
| Vendor | Product | Versions |
|---|---|---|
| cozmoslabs | User Profile Builder – Beautiful User Registration Forms, User Profiles & User Role Editor | 0 – through 3.15.5 |
Weakness: CWE-639 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N