CVE-2025-9887 MEDIUM

CVE-2025-9887: Custom Login And Signup Widget <= 1.0 - Cross-Site Request Forgery

Vendor Bittokazi
Product Custom Login And Signup Widget
Weakness CWE-352 · CSRF
Published September 20, 2025
Last update April 8, 2026

CVSS base score

4.3/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Confidentiality None
Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

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

Related vulnerabilities

08Related CVE