CVE-2022-27238

BigBlueButton version 2.4.7 (or earlier) is vulnerable to stored Cross-Site Scripting (XSS) in the private chat functionality. A threat actor could inject JavaScript payload in his/her username. The payload gets executed in the browser of the victim each time the attacker sends a private message to the victim or when notification about the attacker leaving room is displayed.

• CWE-79

• https://www.mgm-sp.com/en/cve-2022-27238-bigbluebutton-xss/Third Party Advisory
• https://www.mgm-sp.com/en/cve-2022-27238-bigbluebutton-xss/Third Party Advisory

Published

Jun 24, 2022

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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