What the vulnerability does
01Description
The WPFAQBlock– FAQ & Accordion Plugin For Gutenberg plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'class' parameter of the 'wpfaqblock' shortcode in all versions up to, and including, 1.1 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
WPFAQBlock versions 1.1 and earlier contain a cross-site scripting vulnerability that allows authenticated users to inject malicious scripts. The vulnerability affects the plugin's handling of user input in FAQ and accordion blocks. An attacker with low-level site access can craft malicious content that executes in other users' browsers, potentially compromising site security and user data.
What an attacker can do
03Attacker Capabilities
Inject JavaScript code that runs in other users' browsers when they view affected pages.
Potential impact on your site
04Site Impact
Authenticated attackers can steal admin session tokens, modify site content, or redirect users to malicious sites.
Conditions required to exploit
05Prerequisites
Attacker must have a low-privilege account (e.g., contributor or subscriber) on the WordPress site.
Key dates
06Disclosure timeline
March 21, 2026
CVE published
April 8, 2026
Record updated
