What the vulnerability does
01Description
The Multi-column Tag Map plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in all versions up to, and including, 17.0.39 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.
Explanation of Vulnerability in Simple Terms
02Summary
Multi-column Tag Map versions up to 17.0.39 contain a cross-site scripting vulnerability that allows high-privilege users to inject malicious scripts affecting other users or the site. The vulnerability requires high attack complexity and administrative access to exploit. Impact is limited to low-level data exposure and modification across site scope.
What an attacker can do
03Attacker Capabilities
Inject malicious scripts that execute in other users' browsers, potentially stealing data or modifying site content.
Potential impact on your site
04Site Impact
An admin or high-privilege user could inject scripts affecting other users; requires immediate patching once available.
Conditions required to exploit
05Prerequisites
Attacker must have high-level administrative privileges and the attack requires specific technical conditions to succeed.
Key dates
06Disclosure timeline
January 7, 2026
CVE published
April 8, 2026
Record updated
