PT-2026-31851 · WordPress · Userswp

Published 2026-04-10 · Updated 2026-04-11 · CVE-2026-4977

Positive Technologies (AI Summary)

CVSS v3.1

4.3

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

UsersWP – Front-end login form, User Registration, User Profile & Members Directory plugin for WordPress versions up to and including 1.2.58

The plugin is susceptible to Improper Access Control due to insufficient field-level permission validation within the upload file remove() AJAX handler. The $htmlvar parameter is not validated against a whitelist of allowed fields or checked against the field's for admin use property. This allows authenticated attackers with subscriber-level access or higher to modify restricted usermeta columns for their own user account, bypassing intended access restrictions.

Update to a version beyond 1.2.58.

Fix

Missing Authorization

Weakness Enumeration

CWE-862

Related Identifiers

CVE-2026-4977

Affected Products

Userswp

References · 12

• https://nvd.nist.gov/vuln/detail/CVE-2026-4977 · Security Note
• https://plugins.trac.wordpress.org/browser/userswp/trunk/includes/class-forms.php#L2274 · Note
• https://wordfence.com/threat-intel/vulnerabilities/id/efee685c-e2cd-471b-aea9-607124df6006?source=cve · Note
• https://plugins.trac.wordpress.org/browser/userswp/tags/1.2.54/includes/class-meta.php#L165 · Note
• https://plugins.trac.wordpress.org/browser/userswp/tags/1.2.54/includes/class-forms.php#L2251 · Note
• https://twitter.com/CVEarity/status/2042881797474939251 · Twitter Post
• https://plugins.trac.wordpress.org/browser/userswp/trunk/includes/class-meta.php#L165 · Note
• https://plugins.trac.wordpress.org/changeset?old_path=%2Fuserswp/tags/1.2.58&new_path=%2Fuserswp/tags/1.2.59 · Note
• https://twitter.com/VulmonFeeds/status/2042546403101094206 · Twitter Post
• https://plugins.trac.wordpress.org/browser/userswp/trunk/includes/class-forms.php#L2251 · Note
• https://plugins.trac.wordpress.org/browser/userswp/tags/1.2.54/includes/class-forms.php#L2274 · Note
• https://twitter.com/CVEnew/status/2042561797258121604 · Twitter Post