What the vulnerability does
01Description
The Wp Social Login and Register Social Counter plugin for WordPress is vulnerable to missing authorization in versions up to, and including, 3.1.3. This is due to the REST routes wslu/v1/check_cache/{type}, wslu/v1/save_cache/{type}, and wslu/v1/settings/clear_counter_cache being registered with permission_callback set to __return_true and lacking capability or nonce validation in their handlers. This makes it possible for unauthenticated attackers to clear or overwrite the social counter cache via crafted REST requests.
Explanation of Vulnerability in Simple Terms
02Summary
The WP Social Login and Register Social Counter plugin for WordPress contains a missing authorization check that allows unauthenticated attackers to modify data on the site. An attacker can send a network request without authentication to trigger the vulnerability. The plugin does not verify user permissions before processing certain actions, enabling unauthorized changes to site content or settings.
What an attacker can do
03Attacker Capabilities
Modify site data without logging in or having any account.
Potential impact on your site
04Site Impact
Attackers can alter plugin settings, user data, or site content without your knowledge or permission.
Conditions required to exploit
05Prerequisites
Network access to the WordPress site; no authentication or user interaction required.
Key dates
06Disclosure timeline
December 5, 2025
CVE published
April 8, 2026
Record updated
