What the vulnerability does
01Description
The Conference Scheduler plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘className’ parameter in all versions up to, and including, 2.5.1 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Explanation of Vulnerability in Simple Terms
02Summary
Conference Scheduler versions up to 2.5.1 contain a cross-site scripting (XSS) vulnerability that allows authenticated users to inject malicious scripts. The vulnerability has a changed scope, meaning the impact can extend beyond the vulnerable component to affect other users or parts of the application. Low-privileged accounts can exploit this without user interaction.
What an attacker can do
03Attacker Capabilities
Inject malicious scripts that execute in other users' browsers and affect other parts of the application.
Potential impact on your site
04Site Impact
Authenticated users can inject scripts affecting other users' sessions and data; site integrity compromised.
Conditions required to exploit
05Prerequisites
Attacker must have a low-privilege user account; no user interaction required.
Key dates
06Disclosure timeline
June 24, 2025
CVE published
April 8, 2026
Record updated