What the vulnerability does
01Description
The s2Member – Excellent for All Kinds of Memberships, Content Restriction Paywalls & Member Access Subscriptions plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 's2Eot' shortcode in all versions up to, and including, 251005 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
s2Member contains a stored cross-site scripting (XSS) vulnerability that allows authenticated users with low privileges to inject malicious scripts. The vulnerability has scope change, meaning injected code can affect other users and site functionality. An attacker needs a valid account to exploit this flaw. Site administrators should update to a patched version immediately.
What an attacker can do
03Attacker Capabilities
Inject malicious scripts that execute in other users' browsers and affect site functionality.
Potential impact on your site
04Site Impact
Authenticated attackers can deface pages, steal session data, or compromise other user accounts on your site.
Conditions required to exploit
05Prerequisites
Attacker must have a valid s2Member account with low-level privileges; no user interaction required.
Key dates
06Disclosure timeline
February 19, 2026
CVE published
April 8, 2026
Record updated
