Medium · 6.5 CVE-2026-66636 EUVD-2026-60921GHSA-hxx2-grcw-j9mq

WordPress Wise Chat plugin <= 3.4.3 - Cross Site Scripting (XSS) vulnerability

Published Aug 18, 2026 · Updated Oct 7, 2026 · Assigned by Patchstack

Description

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Marcin Wise Chat wise-chat allows Stored XSS.This issue affects Wise Chat: from n/a through 3.4.3.

Affected products

Vendor	Product	Affected	Fixed
Marcin	Wise Chat	≤ 3.4.3	—

References

https://patchstack.com/database/wordpress/plugin/wise-chat/vulnerability/wordpress-wise-chat-plugin-3-4-cross-site-scripting-xss-vulnerability?_s_id=cve vdb-entry