CVE-2025-5821

Critical

Description

The Case Theme User plugin for WordPress is vulnerable to Authentication Bypass in all versions up to, and including, 1.0.3. This is due to the plugin not properly logging in a user with the data that was previously verified through the facebook_ajax_login_callback() function. This makes it possible for unauthenticated attackers to log in as administrative users, as long as they have an existing account on the site which can easily be created by default through the temp user functionality, and access to the administrative user's email.

SeverityCritical
CVSS9.8
Exploit probability—
ProductCase Theme User
PublishedAug 23, 2025
First seenAug 23, 2025
Weakness typeCWE-288CWE-288

How to fix

Sources list no fixed version or patch link for this vulnerability.

Affected products

ProductAffected versionsFixed in
Case-Themes Case Theme Userv ≤ 1.0.3—

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