What the vulnerability does
01Description
The Allow HTML in Category Descriptions plugin for WordPress is vulnerable to Stored Cross-Site Scripting via category descriptions in all versions up to, and including, 1.2.4. This is due to the plugin unconditionally removing the `wp_kses_data` output filter for term_description, link_description, link_notes, and user_description fields without checking user capabilities. This makes it possible for authenticated attackers, with administrator-level access and above, to inject arbitrary web scripts in category descriptions that will execute whenever a user accesses a page where the category description is displayed. This only affects multi-site installations and installations where unfiltered_html has been disabled.
Explanation of Vulnerability in Simple Terms
02Summary
Allow HTML in Category Descriptions contains a cross-site scripting vulnerability in versions up to 1.2.4. An administrator with high privileges can inject malicious scripts into category descriptions. When other users view these descriptions, the scripts execute in their browsers, potentially compromising their sessions or stealing data. The scope is changed, meaning the impact extends beyond the vulnerable component itself.
What an attacker can do
03Attacker Capabilities
Inject malicious scripts into category descriptions that execute when other users view them.
Potential impact on your site
04Site Impact
Malicious administrators can inject scripts affecting other users' browsers and sessions.
Conditions required to exploit
05Prerequisites
Attacker must have high-level administrative privileges and network access to the site.
Key dates
06Disclosure timeline
February 14, 2026
CVE published
April 8, 2026
Record updated
