Medium 5.3Published Jul 16, 2026

CVE-2026-15106WPBot <= 8.5.6 - Missing Authorization to Unauthenticated Arbitrary Chat Session Deletion via 'userid' Parameter

Updated under an hour ago (Oct 28, 2026, 5:40 AM ET)

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It affects quantumcloud WPBot – AI ChatBot for Live Support, Lead Generation, AI Services. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for quantumcloud WPBot – AI ChatBot for Live Support, Lead Generation, AI Services

Exploited in the last 30 days

The WPBot – AI ChatBot for Live Support, Lead Generation, AI Services plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 8.5.6. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for unauthenticated attackers to delete arbitrary chat session records from the wpbot_user and wpbot_conversation tables, including chat history and conversation logs, by supplying a crafted userid value.

CVSS: 5.3 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Weakness (CWE): CWE-862
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Wordfence
NVD analysis: Deferred
Record last updated: Jul 16, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

quantumcloud WPBot – AI ChatBot for Live Support, Lead Generation, AI Services quantumcloud:wpbot_ai_chatbot_for_live_support_lead_generation_ai_services (from the name)	through 8.5.6	CNA record

References

References

https://www.wordfence.com/threat-intel/vulnerabilities/id/dc36ee53-81a9-416e-8e74-31d9c8802d6c?source=cve
https://plugins.trac.wordpress.org/browser/chatbot/tags/8.5.0/includes/chat-sessions/wpbot-chat-sessions.php#L393
https://plugins.trac.wordpress.org/browser/chatbot/tags/8.5.0/includes/chat-sessions/wpbot-chat-sessions.php#L372
https://plugins.trac.wordpress.org/browser/chatbot/tags/8.5.0/includes/chat-sessions/wpbot-chat-sessions.php#L391
https://plugins.trac.wordpress.org/browser/chatbot/tags/8.4.9/includes/chat-sessions/wpbot-chat-sessions.php#L393
https://plugins.trac.wordpress.org/browser/chatbot/tags/8.4.9/includes/chat-sessions/wpbot-chat-sessions.php#L372
https://plugins.trac.wordpress.org/browser/chatbot/tags/8.4.9/includes/chat-sessions/wpbot-chat-sessions.php#L391
https://plugins.trac.wordpress.org/changeset?reponame=&old=3608558%40chatbot&new=3608558%40chatbot

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.