What the vulnerability does
01Description
The Custom Login And Signup Widget plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 1.0. This is due to missing or incorrect nonce validation in the /frndzk_adminclsw.php file. This makes it possible for unauthenticated attackers to change the email and username settings via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.
Explanation of Vulnerability in Simple Terms
02Summary
The Custom Login And Signup Widget for WordPress contains a cross-site request forgery (CSRF) vulnerability affecting versions up to 1.0. An attacker can craft a malicious webpage that, when visited by a logged-in site administrator, performs unwanted actions on the site without their knowledge. The vulnerability requires user interaction and does not expose sensitive data, but can modify site settings or user accounts.
What an attacker can do
03Attacker Capabilities
Perform unwanted actions on the site (like changing settings or user data) by tricking an admin into visiting a malicious webpage.
Potential impact on your site
04Site Impact
An admin's browser session can be hijacked to make unauthorized changes to login/signup settings or user accounts without their consent.
Conditions required to exploit
05Prerequisites
Site admin must be logged in and visit an attacker-controlled webpage; no special privileges or authentication required from attacker.
Key dates
06Disclosure timeline
September 20, 2025
CVE published
April 8, 2026
Record updated