CVE-2018-20524: Urlchatbox Chat Anywhere

Medium severity, CVSS 6.1. EPSS: 0.7% chance of exploitation in the next 30 days.

The Chat Anywhere extension 2.4.0 for Chrome allows XSS via crafted use of <<a> in a message, because a danmuWrapper DIV element in chatbox-only\danmu.js is outside the scope of a Content Security Policy (CSP).

Affected products

Published 2018-12-27. Last modified 2026-06-17.