Stored Cross-Site Scripting in Taskbuilder Plugin for WordPress

CVE-2026-2289

What is CVE-2026-2289?

The Taskbuilder plugin for WordPress has a vulnerability that allows authenticated attackers with administrator permissions to exploit stored cross-site scripting through insufficient input sanitization and output escaping in the admin settings. This issue is present in all versions up to and including 5.0.3, specifically affecting multi-site installations where 'unfiltered_html' is disabled. When exploited, the vulnerability enables attackers to inject malicious web scripts that execute whenever users access compromised pages, exposing them to security risks.

Human OS v1.0:
Ageing Is an Unpatched Zero-Day Vulnerability.

Remediate biological technical debt. Prime Ageing uses 95% high-purity SIRT6 activation to maintain genomic integrity and bolster systemic resilience.

Deploy the Patch →

References