What the vulnerability does
01Description
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in wp.insider Simple Membership Custom Messages simple-membership-custom-messages allows Reflected XSS.This issue affects Simple Membership Custom Messages: from n/a through <= 2.4.
Explanation of Vulnerability in Simple Terms
02Summary
Simple Membership Custom Messages versions 2.4 and earlier contain a cross-site scripting (XSS) vulnerability. An attacker can inject malicious scripts into custom messages that execute in the browsers of site visitors. The vulnerability requires user interaction—a victim must visit a page containing the malicious message. The impact is limited to the affected page context but can compromise user sessions or steal data.
What an attacker can do
03Attacker Capabilities
Inject malicious scripts into custom messages that run in visitors' browsers.
Potential impact on your site
04Site Impact
Visitors' browsers can execute attacker-controlled scripts, risking session hijacking or credential theft.
Conditions required to exploit
05Prerequisites
No authentication required. Victim must visit a page displaying the malicious custom message.
Key dates
06Disclosure timeline
February 3, 2025
CVE published
April 28, 2026
Record updated