CVE-2026-4977
UsersWP <= 1.2.58 - Authenticated (Subscriber+) Restricted Usermeta Modification via 'htmlvar' Parameter
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.
INFO
Published Date :
April 10, 2026, 2:16 a.m.
Last Modified :
April 10, 2026, 2:16 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
Affected Products
The following products are affected by CVE-2026-4977
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update UsersWP plugin to version 1.2.59 or later.
- Validate all user-supplied input for restricted fields.
- Implement strict field-level permission checks.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-4977.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-4977 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-4977
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-4977 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-4977 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by [email protected]
Apr. 10, 2026
Action Type Old Value New Value Added 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. Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N Added CWE CWE-862 Added Reference https://plugins.trac.wordpress.org/browser/userswp/tags/1.2.54/includes/class-forms.php#L2251 Added Reference https://plugins.trac.wordpress.org/browser/userswp/tags/1.2.54/includes/class-forms.php#L2274 Added Reference https://plugins.trac.wordpress.org/browser/userswp/tags/1.2.54/includes/class-meta.php#L165 Added Reference https://plugins.trac.wordpress.org/browser/userswp/trunk/includes/class-forms.php#L2251 Added Reference https://plugins.trac.wordpress.org/browser/userswp/trunk/includes/class-forms.php#L2274 Added Reference https://plugins.trac.wordpress.org/browser/userswp/trunk/includes/class-meta.php#L165 Added Reference https://plugins.trac.wordpress.org/changeset?old_path=%2Fuserswp/tags/1.2.58&new_path=%2Fuserswp/tags/1.2.59 Added Reference https://www.wordfence.com/threat-intel/vulnerabilities/id/efee685c-e2cd-471b-aea9-607124df6006?source=cve