How severe is CVE-2026-13731?

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-2026-13731

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, 8.4.9 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 AJAX nonce required to authenticate the save request is publicly emitted on every frontend page via wp_localize_script, making it freely obtainable by any anonymous visitor and removing any practical barrier to exploitation.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.007 (47.8th percentile) — read the EPSS interpretation.

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 — versions 0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

Frequently asked questions

What is CVE-2026-13731?: CVE-2026-13731 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 2026-07-01.
How severe is CVE-2026-13731?: High severity. CVSS v3 base score is 7.2 out of 10.