Medium severity · published Jul 16, 2026
CVE-2026-15106
WPBot <= 8.5.6 - Missing Authorization to Unauthenticated Arbitrary Chat Session Deletion via 'userid' Parameter
5.3
CVSS
0.5%
EPSS
No
On KEV
Description
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 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 41% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
WA
WPBot – AI ChatBot for Live Support, Lead Generation, AI Services · quantumcloud
through 8.5.6 · source: vendor
Affected product
WA
WPBot – AI ChatBot for Live Support, Lead Generation, AI Services
quantumcloud
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-15106
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-15106
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/chatbot/tags/8.4.9/includes/chat-sessions/wpbot-chat-sessions.php#L372
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/chatbot/tags/8.4.9/includes/chat-sessions/wpbot-chat-sessions.php#L391
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/chatbot/tags/8.4.9/includes/chat-sessions/wpbot-chat-sessions.php#L393
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/chatbot/tags/8.5.0/includes/chat-sessions/wpbot-chat-sessions.php#L372
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/chatbot/tags/8.5.0/includes/chat-sessions/wpbot-chat-sessions.php#L391
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/chatbot/tags/8.5.0/includes/chat-sessions/wpbot-chat-sessions.php#L393
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