What the vulnerability does
01Description
The Taskbuilder – WordPress Project Management & Task Management plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 5.0.2. This is due to missing authorization checks on the project and task comment submission functions (AJAX actions: wppm_submit_proj_comment and wppm_submit_task_comment). This makes it possible for authenticated attackers, with subscriber-level access and above, to create comments on any project or task (including private projects they cannot view or are not assigned to), and inject arbitrary HTML and CSS via the insufficiently sanitized comment_body parameter.
Explanation of Vulnerability in Simple Terms
02Summary
Taskbuilder versions up to 5.0.2 lack proper authorization checks, allowing authenticated users to modify data they should not have access to. An attacker with a low-privilege account can change project or task information without proper permission validation. The vulnerability requires login credentials but does not require user interaction beyond normal application use.
What an attacker can do
03Attacker Capabilities
Modify projects or tasks belonging to other users or teams without authorization.
Potential impact on your site
04Site Impact
Users' project data and task assignments can be altered by other authenticated users, compromising data integrity and team collaboration.
Conditions required to exploit
05Prerequisites
Attacker must have a valid Taskbuilder user account with low-level privileges.
Key dates
06Disclosure timeline
February 18, 2026
CVE published
April 8, 2026
Record updated
