Stored DOM-based cross-site scripting in MxChat WordPress plugin
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.
Summary
The MxChat AI Chatbot & Content Generation for WordPress plugin through 3.2.25 has a stored DOM-based cross-site scripting flaw (CWE-79) in its feedback parameter. Insufficient input sanitization and output escaping let unauthenticated attackers store arbitrary web scripts with a single POST to admin-ajax.php. The stored script runs when an administrator loads the Transcripts page.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
Description from the CNA
The MxChat – AI Chatbot & Content Generation for WordPress plugin for WordPress is vulnerable to Stored DOM-Based Cross-Site Scripting via the 'feedback' parameter in all versions up to, and including, 3.2.25 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The stored payload is written by any unauthenticated visitor via a single POST to admin-ajax.php and detonates automatically when any administrator next loads the Transcripts page.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
The sources list no fixed version for MxChat AI Chatbot & Content Generation for WordPress.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
Timeline
- 2026-10-28 Threatist record created from CVE-2026-110662
- 2026-10-28 Alias added: GHSA-jgfm-j27x-x26p
- 2026-10-28 Priority changed: MEDIUM → LOW
- 2026-10-29 CISA SSVC decision points changed
References
Other 7
- https://www.wordfence.com/threat-intel/vulnerabilities/id/0b284bf9-8720-4417-9433-be147b06023a?source=cve
- https://plugins.trac.wordpress.org/browser/mxchat-basic/tags/3.2.25/js/mxchat_transcripts.js#L267
- https://plugins.trac.wordpress.org/browser/mxchat-basic/tags/3.2.25/js/mxchat_transcripts.js#L1252
- https://plugins.trac.wordpress.org/browser/mxchat-basic/tags/3.2.25/js/mxchat_transcripts.js#L427
- https://plugins.trac.wordpress.org/browser/mxchat-basic/tags/3.2.25/includes/class-mxchat-admin.php#L3824
- https://plugins.trac.wordpress.org/browser/mxchat-basic/tags/3.2.25/mxchat-basic.php#L2340
- https://plugins.trac.wordpress.org/changeset/3751971/mxchat-basic/trunk/js/mxchat_transcripts.js
More mxchat vulnerabilities
- TI-2025-11540 MxChat – AI Chatbot for WordPress <= 2.5.5 - Unauthenticated Information Exposure CVSS 3.1MEDIUM 5.3
- TI-2025-09799 MxChat – AI Chatbot for WordPress <= 2.4.6 - Unauthenticated Blind Server-Side Request Forgery CVSS 3.1MEDIUM 5.3
- TI-2026-11064 MxChat <= 3.2.10 - Authenticated (Admin+) Stored Cross-Site Scripting via 'intro_message' Setting CVSS 3.1MEDIUM 4.4
Sources
- CVE-2026-110662 · CVE Program
- CVE-2026-110662 · NVD
- FIRST EPSS
- GHSA-jgfm-j27x-x26p · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences