XSS in Taskbuilder – Project Management & Task Tool With Kanban Board
CVE-2026-2289
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 authent…
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.000 (1.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.4 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N.
Affected products
Weakness classification (CWE)
References
- www.wordfence.com/threat-intel/vulnerabilities/id/81e26924-c9eb-4ddf-89e3-a8bf9…
- plugins.trac.wordpress.org/browser/taskbuilder/trunk/includes/admin/email_notif…
- plugins.trac.wordpress.org/browser/taskbuilder/tags/5.0.1/includes/admin/email_…
- plugins.trac.wordpress.org/browser/taskbuilder/trunk/includes/class-wppm-functi…
- plugins.trac.wordpress.org/browser/taskbuilder/tags/5.0.1/includes/class-wppm-f…
- plugins.trac.wordpress.org/changeset
Frequently asked questions
- What is CVE-2026-2289?
- CVE-2026-2289 is a medium-severity vulnerability in Taskbuilder – Project Management & Task Tool With Kanban Board, classified under Cross-site Scripting. CVSS score: 4.4/10. Published 2026-03-04.
- How severe is CVE-2026-2289?
- Medium severity. CVSS v3 base score is 4.4 out of 10.