How severe is CVE-2026-16774?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Auth bypass in Quantumcloud Wpbot – Ai Chatbot For Live Support, Lead Generation, Services

CVE-2026-16774

The Chatbot plugin for WordPress is vulnerable to Missing Authorization in versions up to, and including, 8.5.9 via the wpcs_send_email() AJAX handler. This is due to the wpcs_send_email() function being registered on both wp_ajax_wpcs_sen…

Vulnerability class: Broken Access Control

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.

Affected products

Quantumcloud Wpbot – Ai Chatbot For Live Support, Lead Generation, Services — versions 0

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

Frequently asked questions

What is CVE-2026-16774?: CVE-2026-16774 is a medium-severity vulnerability in Quantumcloud Wpbot – Ai Chatbot For Live Support, Lead Generation, Services, classified under Missing Authorization. CVSS score: 5.3/10. Published 2026-07-28.
How severe is CVE-2026-16774?: Medium severity. CVSS v3 base score is 5.3 out of 10.