CVE-2026-4977 UsersWP <= 1.2.58 - Authenticated (Subscriber+) Restricted Usermeta Modification via 'htmlvar' Parameter
Authenticated subscribers can modify restricted user metadata fields due to missing permission checks in the UsersWP WordPress plugin.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-4977?
CVE-2026-4977 is a medium-severity missing authorization vulnerability in stiofansisland UsersWP – Front-end login form, User Registration, User Profile & Members Directory plugin for WP, published on 10 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The UsersWP – Front-end login form, User Registration, User Profile & Members Directory plugin for WordPress is vulnerable to Improper Access Control in all versions up to, and including, 1.2.58 This is due to insufficient field-level permission validation in the upload_file_remove() AJAX handler where the $htmlvar parameter is not validated against a whitelist of allowed fields or checked against the field's for_admin_use property. This makes it possible for authenticated attackers, with subscriber-level access and above, to clear or reset any restricted usermeta column for their own user record, including fields marked as "For admin use only", bypassing intended field-level access restrictions.
Weakness: CWE-862
Which versions are affected by CVE-2026-4977?
How do I fix CVE-2026-4977?
No fix has been published for CVE-2026-4977 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-4977 being exploited?
There is no known exploitation of CVE-2026-4977 in the wild and no public exploit code.
Sources
Also known as GHSA-72hv-q97x-rw7p.