CVE-2026-4977: CWE-862 Missing Authorization in stiofansisland UsersWP – Front-end login form, User Registration, User Profile & Members Directory plugin for WP
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.
AI Analysis
Technical Summary
The UsersWP – Front-end login form, User Registration, User Profile & Members Directory plugin for WordPress suffers from an improper access control vulnerability (CWE-862) in all versions up to and including 1.2.58. The issue arises because the upload_file_remove() AJAX handler does not validate the $htmlvar parameter against a whitelist or check the field's for_admin_use property. As a result, authenticated users with subscriber-level privileges or higher can reset restricted usermeta fields on their own accounts, bypassing intended field-level permission checks.
Potential Impact
An authenticated user with subscriber-level or higher privileges can clear or reset restricted usermeta fields on their own user profile, including fields intended only for admin use. This could lead to unauthorized modification of user profile data but does not impact confidentiality or availability. The CVSS score is 4.3 (medium severity), reflecting limited impact on integrity without elevation of privileges beyond the user's own account.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or patch is currently documented. Until a patch is available, restrict subscriber-level user capabilities where possible and monitor for plugin updates addressing this issue.
CVE-2026-4977: CWE-862 Missing Authorization in stiofansisland UsersWP – Front-end login form, User Registration, User Profile & Members Directory plugin for WP
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.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The UsersWP – Front-end login form, User Registration, User Profile & Members Directory plugin for WordPress suffers from an improper access control vulnerability (CWE-862) in all versions up to and including 1.2.58. The issue arises because the upload_file_remove() AJAX handler does not validate the $htmlvar parameter against a whitelist or check the field's for_admin_use property. As a result, authenticated users with subscriber-level privileges or higher can reset restricted usermeta fields on their own accounts, bypassing intended field-level permission checks.
Potential Impact
An authenticated user with subscriber-level or higher privileges can clear or reset restricted usermeta fields on their own user profile, including fields intended only for admin use. This could lead to unauthorized modification of user profile data but does not impact confidentiality or availability. The CVSS score is 4.3 (medium severity), reflecting limited impact on integrity without elevation of privileges beyond the user's own account.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or patch is currently documented. Until a patch is available, restrict subscriber-level user capabilities where possible and monitor for plugin updates addressing this issue.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Wordfence
- Date Reserved
- 2026-03-27T10:19:39.046Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69d857791cc7ad14da4a0d67
Added to database: 4/10/2026, 1:50:49 AM
Last enriched: 4/17/2026, 12:27:16 PM
Last updated: 5/24/2026, 8:33:42 PM
Views: 63
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