CVE-2026-109447 Privilege escalation in User Profile Builder – Beautiful User Registration Forms, User Profiles & User Role Editor
Unauthenticated attackers can escalate privileges to administrator by exploiting a legacy field collision in the User Profile Builder plugin.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-109447?
CVE-2026-109447 is a high-severity vulnerability in cozmoslabs User Profile Builder – Beautiful User Registration Forms, User Profiles & User Role Editor, published on 16 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The User Profile Builder – Beautiful User Registration Forms, User Profiles & User Role Editor plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 4.0.3 via the `role` parameter handled by the `wppb_add_meta_to_user_on_activation()` function. The vulnerability exists because the activation handler passes the attacker-supplied role value directly to `WP_User::set_role()` with no allow-list validation, and the 4.0.3 reserved-name check exempts pre-existing form fields from the block, allowing a legacy field with meta-name `role` to persist and bridge attacker-controlled request input into the serialized signup record stored in `wp_signups`. This makes it possible for unauthenticated attackers to gain a fully activated WordPress administrator account by submitting `role=administrator` through the public `[wppb-register]` shortcode form and subsequently clicking the confirmation activation link. Exploitation requires the site to have a legacy form field with meta-name `role` carried over from before the 4.0.3 upgrade, email confirmation enabled, and open user registration — all stable site-state conditions once established.
Weakness: CWE-269
Which versions are affected by CVE-2026-109447?
How do I fix CVE-2026-109447?
No fix has been published for CVE-2026-109447 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-109447 being exploited?
There is no known exploitation of CVE-2026-109447 in the wild and no public exploit code.
Sources
Also known as GHSA-gqmr-m2rf-7c75.