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 Stored XSS.This issue affects Event post: from n/a through <= 5.10.1.
Explanation of Vulnerability in Simple Terms
02Summary
Event Post versions up to 5.10.1 contain a cross-site scripting (XSS) vulnerability that allows authenticated users to inject malicious scripts. An attacker with low-level site access can craft a malicious link or page that, when visited by another user, executes arbitrary JavaScript in their browser. This can lead to session hijacking, credential theft, or unauthorized actions performed on behalf of the victim.
What an attacker can do
03Attacker Capabilities
Inject and execute malicious JavaScript in other users' browsers to steal sessions, credentials, or perform unauthorized actions.
Potential impact on your site
04Site Impact
Authenticated users' accounts and data are at risk if they interact with attacker-controlled content; site reputation and user trust may be damaged.
Conditions required to exploit
05Prerequisites
Attacker must have a low-privilege site account; victim must click a malicious link or visit a crafted page.
Key dates
06Disclosure timeline
June 6, 2025
CVE published
April 28, 2026
Record updated