Vulnerability Description
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.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://plugins.trac.wordpress.org/browser/taskbuilder/tags/5.0.1/includes/admin
- https://plugins.trac.wordpress.org/browser/taskbuilder/tags/5.0.1/includes/class
- https://plugins.trac.wordpress.org/browser/taskbuilder/trunk/includes/admin/emai
- https://plugins.trac.wordpress.org/browser/taskbuilder/trunk/includes/class-wppm
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old
- https://www.wordfence.com/threat-intel/vulnerabilities/id/81e26924-c9eb-4ddf-89e
FAQ
What is CVE-2026-2289?
CVE-2026-2289 is a vulnerability with a CVSS score of 4.4 (MEDIUM). 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 escap...
How severe is CVE-2026-2289?
CVE-2026-2289 has been rated MEDIUM with a CVSS base score of 4.4/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-2289?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.