What the vulnerability does
01Description
The MembershipWorks – Membership, Events & Directory plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in all versions up to, and including, 6.14 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.
Explanation of Vulnerability in Simple Terms
02Summary
MembershipWorks versions 6.14 and earlier contain a cross-site scripting (XSS) vulnerability that allows high-privilege users to inject malicious scripts affecting other users or the site. The vulnerability requires high attack complexity and administrative access to exploit. While the scope is changed, the confidentiality and integrity impacts are limited.
What an attacker can do
03Attacker Capabilities
Inject malicious scripts that execute in other users' browsers or affect site functionality.
Potential impact on your site
04Site Impact
An admin or high-privilege user could inject scripts affecting other users; requires immediate patching once available.
Conditions required to exploit
05Prerequisites
Attacker must have high-level administrative privileges and the attack requires specific technical conditions to succeed.
Key dates
06Disclosure timeline
November 12, 2025
CVE published
April 8, 2026
Record updated
