What the vulnerability does
01Description
The Bootstrap Shortcode plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the `box` shortcode in all versions up to, and including, 1.0. This is 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
Bootstrap Shortcode versions 1.0 and earlier contain a cross-site scripting (XSS) vulnerability in shortcode processing. An authenticated user with low privileges can inject malicious scripts that execute in other users' browsers, including administrators. The vulnerability affects the entire site scope due to how shortcodes are rendered across multiple pages.
What an attacker can do
03Attacker Capabilities
Inject malicious JavaScript that runs in other users' browsers, potentially stealing session tokens or performing actions as those users.
Potential impact on your site
04Site Impact
Authenticated users can compromise other users' accounts or sessions through injected scripts in shortcodes visible site-wide.
Conditions required to exploit
05Prerequisites
Attacker must have a low-privilege account (e.g., contributor or subscriber) on the site; no user interaction required from victims.
Key dates
06Disclosure timeline
May 12, 2026
CVE published
May 13, 2026
Record updated