CVE-2026-83593: high-severity vulnerability in quantumcloud WPBot – AI ChatBot for Live…
WPBot <= 8.7.3 - Unauthenticated Stored Cross-Site Scripting via 'conversation' Parameter
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.2epss 0.5%
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Related CVEs — quantumcloud WPBot – AI ChatBot for Live…
In the same product, most dangerous first.
CVE-2023-5204CRITICALAI ChatBot <= 4.8.9 - Unauthenticated SQL Injection via qc_wpbo_search_responseEPSS 7.8%CVE-2023-5241CRITICALAI ChatBot <= 4.8.9 and 4.9.2 - Authenticated (Subscriber+) Directory Traversal to Arbitrary File Write via qcld_openai_upload_pagetraining_fileEPSS 2.6%CVE-2023-5212CRITICALAI ChatBot <= 4.8.9 and 4.9.2- Authenticated (Subscriber+) Arbitrary File Deletion via qcld_openai_delete_training_fileEPSS 2.0%CVE-2023-5254MEDIUMAI ChatBot <= 4.8.9 - Unauthenticated Sensitive Information Exposure via qcld_wb_chatbot_check_userEPSS 0.9%CVE-2026-13731HIGHWPBot <= 8.4.9 - Unauthenticated Stored Cross-Site Scripting via 'conversation' ParameterEPSS 0.9%CVE-2023-5533MEDIUMAI ChatBot <= 4.8.9 and 4.9.2 - Missing Authorization on AJAX actionsEPSS 0.6%
References
https://plugins.trac.wordpress.org/browser/chatbot/tags/8.5.6/functions.php#L1922https://plugins.trac.wordpress.org/browser/chatbot/tags/8.5.6/includes/chat-sessions/js/admin.js#L86https://plugins.trac.wordpress.org/browser/chatbot/tags/8.5.6/includes/chat-sessions/wpbot-chat-sessions.php#L564https://plugins.trac.wordpress.org/browser/chatbot/tags/8.5.6/includes/chat-sessions/wpbot-chat-sessions.php#L566https://plugins.trac.wordpress.org/browser/chatbot/tags/8.5.6/includes/chat-sessions/wpbot-chat-sessions.php#L708https://plugins.trac.wordpress.org/browser/chatbot/tags/8.5.6/includes/chat-sessions/wpbot-chat-sessions.php#L866https://plugins.trac.wordpress.org/browser/chatbot/tags/8.5.6/qcld-wpwbot.php#L613https://plugins.trac.wordpress.org/browser/chatbot/tags/8.6.9/functions.php#L1922https://plugins.trac.wordpress.org/browser/chatbot/tags/8.6.9/includes/chat-sessions/js/admin.js#L86https://plugins.trac.wordpress.org/browser/chatbot/tags/8.6.9/includes/chat-sessions/wpbot-chat-sessions.php#L564https://plugins.trac.wordpress.org/browser/chatbot/tags/8.6.9/includes/chat-sessions/wpbot-chat-sessions.php#L566https://plugins.trac.wordpress.org/browser/chatbot/tags/8.6.9/includes/chat-sessions/wpbot-chat-sessions.php#L708