CVE-2026-83593

WPBot <= 8.7.3 - Unauthenticated Stored Cross-Site Scripting via 'conversation' Parameter

Published Sep 9, 2026 CVSS 3.1 · 7.2 High EPSS < 1% KEV · Not listed
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, 8.7.3 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.

Remediation

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

No advisories available
References
Link Providers
https://plugins.trac.wordpress.org/browser/chatbot/tags/8.5.6/functions.php#L1922 cve-icon cve-icon
https://plugins.trac.wordpress.org/browser/chatbot/tags/8.5.6/includes/chat-sessions/js/admin.js#L86 cve-icon cve-icon
https://plugins.trac.wordpress.org/browser/chatbot/tags/8.5.6/includes/chat-sessions/wpbot-chat-sessions.php#L564 cve-icon cve-icon
https://plugins.trac.wordpress.org/browser/chatbot/tags/8.5.6/includes/chat-sessions/wpbot-chat-sessions.php#L566 cve-icon cve-icon
https://plugins.trac.wordpress.org/browser/chatbot/tags/8.5.6/includes/chat-sessions/wpbot-chat-sessions.php#L708 cve-icon cve-icon
https://plugins.trac.wordpress.org/browser/chatbot/tags/8.5.6/includes/chat-sessions/wpbot-chat-sessions.php#L866 cve-icon cve-icon
https://plugins.trac.wordpress.org/browser/chatbot/tags/8.5.6/qcld-wpwbot.php#L613 cve-icon cve-icon
https://plugins.trac.wordpress.org/browser/chatbot/tags/8.6.9/functions.php#L1922 cve-icon cve-icon
https://plugins.trac.wordpress.org/browser/chatbot/tags/8.6.9/includes/chat-sessions/js/admin.js#L86 cve-icon cve-icon
https://plugins.trac.wordpress.org/browser/chatbot/tags/8.6.9/includes/chat-sessions/wpbot-chat-sessions.php#L564 cve-icon cve-icon
https://plugins.trac.wordpress.org/browser/chatbot/tags/8.6.9/includes/chat-sessions/wpbot-chat-sessions.php#L566 cve-icon cve-icon
https://plugins.trac.wordpress.org/browser/chatbot/tags/8.6.9/includes/chat-sessions/wpbot-chat-sessions.php#L708 cve-icon cve-icon
https://plugins.trac.wordpress.org/browser/chatbot/tags/8.6.9/includes/chat-sessions/wpbot-chat-sessions.php#L866 cve-icon cve-icon
https://plugins.trac.wordpress.org/browser/chatbot/tags/8.6.9/qcld-wpwbot.php#L613 cve-icon cve-icon
https://plugins.trac.wordpress.org/changeset?reponame=&old=3679725%40chatbot&new=3679725%40chatbot cve-icon cve-icon
https://www.wordfence.com/threat-intel/vulnerabilities/id/710fb372-4b7e-43e3-86a7-417143536f43?source=cve cve-icon cve-icon
History
Type Values Removed Values Added
First Time appeared Quantumcloud
Quantumcloud wpbot – Ai Chatbot For Live Support, Lead Generation, Ai Services
Wordpress
Wordpress wordpress
Vendors & Products Quantumcloud
Quantumcloud wpbot – Ai Chatbot For Live Support, Lead Generation, Ai Services
Wordpress
Wordpress wordpress
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
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, 8.7.3 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.
Title WPBot <= 8.7.3 - Unauthenticated Stored Cross-Site Scripting via 'conversation' Parameter
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 7.2, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Wordfence
Published
Updated
Sep 9, 2026, 4:02 PM
Reserved
Aug 31, 2026, 7:43 PM
Status
Deferred
Published
Sep 9, 2026, 6:17 AM
Modified
Sep 9, 2026, 5:17 PM