How severe is CVE-2026-83593?

High severity. CVSS v3 base score is 7.2 out of 10.

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

CVE-2026-83593

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.

Vulnerability class: XSS (Cross-Site Scripting)

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N.

Affected products

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

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

Frequently asked questions

What is CVE-2026-83593?: CVE-2026-83593 is a high-severity vulnerability in Quantumcloud Wpbot – Ai Chatbot For Live Support, Lead Generation, Services, classified under Cross-site Scripting. CVSS score: 7.2/10. Published 2026-09-09.
How severe is CVE-2026-83593?: High severity. CVSS v3 base score is 7.2 out of 10.