EUVD-2026-41361
GHSA-3pc2-v6g3-vwg9
Severity by source
AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
Unauthenticated network-reachable reflected XSS (AV:N/PR:N) requiring victim click (UI:R), with scope change into the WordPress origin and low C/I/A impact typical of reflected XSS.
Primary rating from Vendor (Patchstack).
CVSS VectorVendor: Patchstack
Lifecycle Timeline
1DescriptionCVE.org
Unauthenticated Cross Site Scripting (XSS) in ChatBot <= 8.3.2 versions.
AnalysisAI
Reflected cross-site scripting in the QuantumCloud ChatBot WordPress plugin (versions 8.3.2 and earlier) lets unauthenticated remote attackers inject malicious script that executes in a victim's browser when they follow a crafted link. The CVSS 3.1 score is 7.1 with a scope change (S:C), reflecting that injected script runs in the security context of the WordPress site rather than the vulnerable component alone. No public exploit identified at time of analysis, and the vulnerability is not listed in CISA KEV.
Technical ContextAI
The affected component is the ChatBot plugin published by QuantumCloud for the WordPress platform (CPE cpe:2.3:a:quantumcloud:chatbot). The root cause is CWE-79 (Improper Neutralization of Input During Web Page Generation), meaning attacker-controlled input is reflected back into an HTTP response without adequate output encoding or input sanitization. Because this is a reflected variant, the malicious payload is not stored server-side but is echoed from a request parameter into the rendered page, so it triggers only when a victim loads a specially crafted URL. The CVSS scope change (S:C) indicates the injected script can affect resources beyond the plugin itself - typically the containing WordPress DOM, session, and any authenticated admin browsing the page.
RemediationAI
Update the ChatBot plugin to a version later than 8.3.2 once the vendor releases a fixed build; the input does not specify an exact patched version, so consult the Patchstack advisory (https://patchstack.com/database/wordpress/plugin/chatbot/vulnerability/wordpress-chatbot-plugin-8-3-2-reflected-cross-site-scripting-xss-vulnerability) and the QuantumCloud plugin changelog for the corrected release before upgrading. If an update is not yet available, apply a Web Application Firewall rule (Patchstack or equivalent WordPress WAF) to filter reflected XSS payloads targeting the plugin's request parameters, which blocks the attack with minimal functional side effects. As additional compensating controls, restrict or deactivate the ChatBot plugin on sites where it is not actively used (trade-off: chatbot functionality is lost), and ensure the site sets a restrictive Content-Security-Policy that disallows inline script execution to blunt payload execution (trade-off: CSP may break legitimate inline scripts and requires testing).
A blind SQL injection vulnerability exists in QuantumCloud ChatBot plugin affecting versions up to and including 7.7.9,
Cross-Site Request Forgery (CSRF) vulnerability in QuantumCloud AI ChatBot plugin <= 4.2.8 versions. Rated high severity
Stored cross-site scripting in the QuantumCloud ChatBot WordPress plugin (versions through 8.3.7) lets an attacker persi
Broken access control in the QuantumCloud ChatBot plugin for WordPress (versions <= 7.9.7) allows authenticated low-priv
The Chatbot for WordPress plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in versio
Same weakness CWE-79 – Cross-site Scripting (XSS)
View allShare
External POC / Exploit Code
Leaving vuln.today