Vulnerabilities / MxChat / WPSEC-2026-1227
MxChat <= 3.2.25 - Unauthenticated Stored Cross-Site Scripting via Chat Messages
High 7.2
CWE-79Fixed in 3.2.26
- ID
- WPSEC-2026-1227
- Plugin
- MxChat – AI Chatbot & Content Generation for WordPress (mxchat-basic)
- Affected
- all versions before 3.2.26
- Remediation
- Update to 3.2.26 or later.
- CVSS 3.1
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
- Weakness
- CWE-79
- Usage
- Plugin Low · Affected versions Low among sites WPSec scans, 2026-10-18
- Attack surface
- MxChat on WPSec AttackSurface
- Fix released
- Published
Description
The MxChat plugin for WordPress is vulnerable to Stored Cross-Site Scripting via chat messages shown in the admin transcript viewer in all versions up to, and including, 3.2.25. This is due to messages being filtered with wp_kses before a regex-based link formatter ran, without being sanitized again afterwards. A URL placed inside an allowed attribute could then break out of that attribute. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in chat messages that execute when an administrator opens the conversation transcript.
References
- https://wpsec.com/vuln/WPSEC-2026-1227/
- https://plugins.svn.wordpress.org/mxchat-basic/tags/3.2.26/
- https://wordpress.org/plugins/mxchat-basic/
Published by WPSec. Provided as is, without warranty. Corrections: contact us.
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