CVE-2026-13731
HighExploitedWPBot <= 8.4.9 - Unauthenticated Stored Cross-Site Scripting via 'conversation' Parameter
Published Jun 30, 2026 · Updated Jul 1, 2026 · Also known as 124f2b72-d8da-46ba-844f-e9cc01441702, EUVD-2026-40889, GHSA-x882-f7rv-28ch
Key Facts
Patch immediately- CVE-2026-13731 is a high-severity vulnerability (CVSS 7.2 v3.1) affecting chatbot (wordpress-plugin), WPBot – AI ChatBot for Live Support, Lead Generation, AI Services.
- It is exploited in the wild, listed in Industry KEV feed since Jul 1, 2026. No public exploit code is known.
- EPSS estimates a 0.9% probability of exploitation in the next 30 days.
- Fixed versions are available, including chatbot 8.5.0.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v3.1
7.2
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
EPSS (30-day exploit likelihood)
0.9%
Higher than 58.6% of all scored CVEs
Exploited in the wild
Yes
1 catalog listing
Public exploit code
None known
Get the full CVE-2026-13731 brief as a PDF
Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.
Description
The WPBot – AI ChatBot for Live Support, Lead Generation, AI Services plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'conversation' parameter in all versions up to, and including, 8.4.9 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 AJAX nonce required to authenticate the save request is publicly emitted on every frontend page via wp_localize_script, making it freely obtainable by any anonymous visitor and removing any practical barrier to exploitation.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| Industry KEV feed | Jul 1, 2026 | n/a | Not reported |
Required action: Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.
Affected Products
3 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| chatbotwordpress-plugin | See advisory | 8.5.0 |
| WPBot – AI ChatBot for Live Support, Lead Generation, AI Services | See advisory | n/a |
Patched Releases
chatbot
8.5.0
Timeline
Publicly disclosed
Jun 30, 2026
Added to Industry KEV feed
Jul 1, 2026
Last updated
Jul 1, 2026
Weakness Type
- CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
References
- advisorywordfence.com · 124f2b72-d8da-46ba-844f-e9cc01441702
- advisorywordfence.com · 124f2b72-d8da-46ba-844f-e9cc01441702
- exploitVulnCheck exploitation report
- otherplugins.trac.wordpress.org · functions.php
- otherplugins.trac.wordpress.org · view-single-chat.php
FAQ
Common Questions.
The WPBot – AI ChatBot for Live Support, Lead Generation, AI Services plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'conversation' parameter in all versions up to, and including, 8.4.9 due to insufficient input sanitization and output escaping.
Affected: chatbot (wordpress-plugin); WPBot – AI ChatBot for Live Support, Lead Generation, AI Services. The full list is in the CVE brief.
It is exploited in the wild, listed in Industry KEV feed since Jul 1, 2026.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
Fixed versions are available, including chatbot 8.5.0.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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