What the vulnerability does
01Description
The aBlocks – WordPress Gutenberg Blocks plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the "Table Of Content" Block, specifically in the "markerView" attribute, in all versions up to, and including, 1.6.1 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
aBlocks versions up to 1.6.1 contain a stored cross-site scripting (XSS) vulnerability that allows authenticated users to inject malicious scripts. These scripts execute in the browsers of other site visitors, potentially compromising their sessions or stealing sensitive data. The vulnerability affects the plugin's block, dashboard, popup, form, and animation builder components.
What an attacker can do
03Attacker Capabilities
Inject malicious scripts that execute in other users' browsers and steal their session data or credentials.
Potential impact on your site
04Site Impact
Compromised user accounts, stolen admin sessions, and malware distribution to site visitors if an attacker gains plugin access.
Conditions required to exploit
05Prerequisites
Attacker must have a WordPress user account with at least Contributor or Editor permissions to create or edit content.
Key dates
06Disclosure timeline
February 18, 2025
CVE published
April 8, 2026
Record updated
