CVE-2026-83593CWE-79cross-site-scripting

CVE-2026-83593

High · published September 9, 2026

CVSS v3.1
7.2
EPSS
1%
Percentile
43.8
In the wild
Unconfirmed
What it is

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, 8.7.3 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 action is gated only by a nonce that is localized into every public-facing page via wp_localize_script, rendering the nonce check ineffective as an access control barrier for unauthenticated users.

The record
Technical detail
CVSS v3.1
7.2 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00527 · 43.8th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-09-09T10:17Z
References (16)
https://plugins.trac.wordpress.org/browser/chatbot/tags/8.5.6/functions.php#L1922 · [email protected]https://plugins.trac.wordpress.org/browser/chatbot/tags/8.5.6/includes/chat-sessions/js/admin.js#L86 · [email protected]https://plugins.trac.wordpress.org/browser/chatbot/tags/8.5.6/includes/chat-sessions/wpbot-chat-sessions.php#L564 · [email protected]https://plugins.trac.wordpress.org/browser/chatbot/tags/8.5.6/includes/chat-sessions/wpbot-chat-sessions.php#L566 · [email protected]https://plugins.trac.wordpress.org/browser/chatbot/tags/8.5.6/includes/chat-sessions/wpbot-chat-sessions.php#L708 · [email protected]https://plugins.trac.wordpress.org/browser/chatbot/tags/8.5.6/includes/chat-sessions/wpbot-chat-sessions.php#L866 · [email protected]https://plugins.trac.wordpress.org/browser/chatbot/tags/8.5.6/qcld-wpwbot.php#L613 · [email protected]https://plugins.trac.wordpress.org/browser/chatbot/tags/8.6.9/functions.php#L1922 · [email protected]https://plugins.trac.wordpress.org/browser/chatbot/tags/8.6.9/includes/chat-sessions/js/admin.js#L86 · [email protected]https://plugins.trac.wordpress.org/browser/chatbot/tags/8.6.9/includes/chat-sessions/wpbot-chat-sessions.php#L564 · [email protected]https://plugins.trac.wordpress.org/browser/chatbot/tags/8.6.9/includes/chat-sessions/wpbot-chat-sessions.php#L566 · [email protected]https://plugins.trac.wordpress.org/browser/chatbot/tags/8.6.9/includes/chat-sessions/wpbot-chat-sessions.php#L708 · [email protected]https://plugins.trac.wordpress.org/browser/chatbot/tags/8.6.9/includes/chat-sessions/wpbot-chat-sessions.php#L866 · [email protected]https://plugins.trac.wordpress.org/browser/chatbot/tags/8.6.9/qcld-wpwbot.php#L613 · [email protected]https://plugins.trac.wordpress.org/changeset?reponame=&old=3679725%40chatbot&new=3679725%40chatbot · [email protected]https://www.wordfence.com/threat-intel/vulnerabilities/id/710fb372-4b7e-43e3-86a7-417143536f43?source=cve · [email protected]
EPSS history
Timeline
  • 10 SEP 03:18Z
    EPSS moved — → 0%
    epss
  • 09 SEP 05:31Z
    WPBot <= 8.7.3 - Unauthenticated Stored Cross-Site Scripting via 'conversation' Parameter
    cvelistv5