CVE-2026-13731: QuantumCloud WPBot stored XSS in conversation parameter

CVE-2026-13731 · Severity: high · CVSS 7.2 · Published 2026-07-01

A vulnerability exists in the WPBot plugin for WordPress, which is used to provide AI-driven customer support and lead generation. An attacker can inject malicious scripts into the chatbot's conversation logs, which will then execute when an administrator or other user views those logs. This could lead to unauthorized actions being performed in the context of a site administrator's session, potentially compromising the website.

Technologies: QuantumCloud WPBot. Vendors: QuantumCloud.

Quick answers

Is CVE-2026-13731 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-13731 being exploited in the wild.
How severe is CVE-2026-13731?
High severity, with a CVSS score of 7.2, published 1 July 2026.
Which products and versions are affected?
QuantumCloud WPBot up to, and including, 8.4.9.
Is there a fix for CVE-2026-13731?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-13731 attacked?
It is attacked over the network, in a software library.
Am I affected by CVE-2026-13731?
Check whether you run QuantumCloud WPBot at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The WPBot plugin for WordPress is vulnerable to Stored Cross-Site Scripting (XSS) due to insufficient sanitization and escaping on the 'conversation' parameter. The vulnerability is exploitable by unauthenticated attackers because the AJAX nonce required to authenticate the 'save' request is publicly emitted on every frontend page via the wp_localize_script function. By leveraging this nonce, an attacker can send a crafted request to store arbitrary JavaScript in the database. These scripts are then executed in the browser of any user (typically an administrator viewing chat logs) who accesses the page where the conversation is rendered. The issue affects all versions up to and including 8.4.9.

Affected products

  • QuantumCloud WPBot – AI ChatBot for Live Support, Lead Generation, AI Services up to, and including, 8.4.9

Timeline

  • 2026-07-01: advisory: NVD published the CVE record based on Wordfence data.

References

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