What the vulnerability does
01Description
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Bastien Ho Event post event-post allows DOM-Based XSS.This issue affects Event post: from n/a through <= 5.9.11.
Explanation of Vulnerability in Simple Terms
02Summary
Event post versions up to 5.9.11 contain a cross-site scripting (XSS) vulnerability that allows authenticated users to inject malicious scripts. The vulnerability requires user interaction—typically a victim clicking a crafted link—and can affect other users viewing the site. An attacker with low-level access can inject code that steals session data or performs actions on behalf of other users.
What an attacker can do
03Attacker Capabilities
Inject malicious scripts that execute in other users' browsers and steal their session data or perform actions on their behalf.
Potential impact on your site
04Site Impact
Authenticated users can be tricked into executing attacker-controlled JavaScript, compromising their accounts and site data.
Conditions required to exploit
05Prerequisites
Attacker must have a low-level user account and the victim must click a malicious link or visit a crafted page.
Key dates
06Disclosure timeline
April 22, 2025
CVE published
April 28, 2026
Record updated