What the vulnerability does
01Description
The WP Shortcodes Plugin — Shortcodes Ultimate plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'max_width' attribute of the `su_box` shortcode in all versions up to, and including, 7.4.10 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
Shortcodes Ultimate versions up to 7.4.10 contain a cross-site scripting (XSS) vulnerability that allows authenticated users to inject malicious scripts. The vulnerability affects the plugin's shortcode processing and can impact other users viewing affected content. Site administrators should update to a version newer than 7.4.10 to remediate this issue.
What an attacker can do
03Attacker Capabilities
Inject malicious JavaScript that executes in other users' browsers when they view affected pages.
Potential impact on your site
04Site Impact
Authenticated users can inject scripts affecting other site visitors, potentially compromising user sessions or stealing data.
Conditions required to exploit
05Prerequisites
Attacker must have a WordPress user account with permission to create or edit posts/pages containing shortcodes.
Key dates
06Disclosure timeline
March 31, 2026
CVE published
April 8, 2026
Record updated
