What the vulnerability does
01Description
The Event RSVP and Simple Event Management Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'emd_mb_meta' shortcode in all versions up to, and including, 4.1.0 due to insufficient input sanitization and output escaping on user supplied attributes. 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
The Event RSVP and Simple Event Management Plugin for WordPress contains a cross-site scripting (XSS) vulnerability in versions up to 4.1.0. An authenticated user with low privileges can inject malicious scripts that execute in other users' browsers, potentially affecting site visitors and administrators. The vulnerability has scope impact, meaning it can affect components beyond the plugin itself.
What an attacker can do
03Attacker Capabilities
Inject malicious scripts that run in other users' browsers to steal data or perform actions on their behalf.
Potential impact on your site
04Site Impact
Authenticated users can inject scripts affecting other site visitors and admins; may lead to credential theft or unauthorized actions.
Conditions required to exploit
05Prerequisites
Attacker must have a low-privilege account on the site (e.g., subscriber or contributor role).
Key dates
06Disclosure timeline
June 26, 2025
CVE published
April 8, 2026
Record updated
