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4.4
Taskbuilder Plugin for WordPress: Inject Malicious Scripts on Admin Settings
CVE-2026-2289
Summary
The Taskbuilder plugin for WordPress has a security weakness that allows attackers to inject malicious code into admin settings pages. This can happen if you have multi-site WordPress installations or have disabled a specific feature that prevents malicious code from being executed. To fix this, update the plugin to version 5.0.4 or later if you're using it.
Original title
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 es...
Original 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.
nvd CVSS3.1
4.4
Vulnerability type
CWE-79
Cross-site Scripting (XSS)
- 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...
Published: 4 Mar 2026 · Updated: 13 Mar 2026 · First seen: 6 Mar 2026