What the vulnerability does
01Description
The Xelion Webchat plugin for WordPress is vulnerable to unauthorized modification of data that can lead to privilege escalation due to a missing capability check on the xwc_save_settings() function in all versions up to, and including, 9.1.0. This makes it possible for authenticated attackers, with Subscriber-level access and above, to update arbitrary options on the WordPress site. This can be leveraged to update the default role for registration to administrator and enable user registration for attackers to gain administrative user access to a vulnerable site.
Explanation of Vulnerability in Simple Terms
02Summary
Xelion Webchat versions 9.1.0 and earlier lack proper authorization checks, allowing authenticated users to perform actions they should not have access to. An attacker with low-level credentials can read, modify, or delete data without restriction. This affects confidentiality, integrity, and availability of the webchat system.
What an attacker can do
03Attacker Capabilities
Read, modify, or delete webchat data and settings without proper authorization.
Potential impact on your site
04Site Impact
Unauthorized users can access sensitive chat data, modify configurations, or disrupt service availability.
Conditions required to exploit
05Prerequisites
Attacker must have a valid low-level user account on the Xelion Webchat system.
Key dates
06Disclosure timeline
April 24, 2025
CVE published
April 8, 2026
Record updated
