What the vulnerability does
01Description
The FL3R Accessibility Suite plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's fl3raccessibilitysuite shortcode in all versions up to, and including, 1.4 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
FL3R Accessibility Suite versions 1.4 and earlier contain a cross-site scripting vulnerability that allows authenticated users to inject malicious scripts affecting other users across the site. The vulnerability requires low-level authentication and does not require user interaction to execute. An attacker can inject code that impacts confidentiality and integrity of user data.
What an attacker can do
03Attacker Capabilities
Inject malicious scripts that execute in other users' browsers and affect site data.
Potential impact on your site
04Site Impact
Authenticated users can inject scripts affecting other users' sessions and data integrity across the site.
Conditions required to exploit
05Prerequisites
Attacker must have low-level authenticated access to the site.
Key dates
06Disclosure timeline
June 27, 2025
CVE published
April 8, 2026
Record updated
