What the vulnerability does
01Description
The Taskbuilder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in all versions up to, and including, 5.0.3 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
Taskbuilder versions up to 5.0.3 contain a cross-site scripting (XSS) vulnerability in a high-privilege context. An authenticated administrator can inject malicious scripts that execute in other users' browsers when they view affected pages. The vulnerability has limited scope but can compromise data integrity and expose sensitive information to attackers with admin access.
What an attacker can do
03Attacker Capabilities
Inject malicious scripts that run in other users' browsers and steal data or perform actions on their behalf.
Potential impact on your site
04Site Impact
Administrators with malicious intent or compromised admin accounts can inject scripts affecting other users' sessions and data.
Conditions required to exploit
05Prerequisites
Attacker must have administrator-level access to Taskbuilder; no user interaction required from victims.
Key dates
06Disclosure timeline
March 4, 2026
CVE published
April 8, 2026
Record updated
