CVE-2026-13005 is a stored Cross-Site Scripting (CWE-79) vulnerability in the MxChat – AI Chatbot & Content Generation for WordPress plugin. Due to insufficient input sanitization and output escaping in admin settings, authenticated administrators can inject arbitrary web scripts. These scripts execute in the context of users visiting the injected pages. The vulnerability affects all plugin versions up to and including 3.2.10, but only in multi-site WordPress installations or where unfiltered_html is disabled.

An attacker with administrator-level permissions can inject malicious scripts that execute in the browsers of users who visit the affected pages. This can lead to the theft of sensitive information, session hijacking, or other client-side attacks. The vulnerability does not affect single-site installations or installations where unfiltered_html is enabled. There is no indication of availability impact or known exploits in the wild.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict administrator access to trusted users only and consider enabling unfiltered_html capability if appropriate. Monitor official vendor channels for updates or patches addressing this vulnerability.