CVE-2023-39991: Blindsidenetworks Bigbluebutton

Medium severity, CVSS 6.1. EPSS: 0.4% chance of exploitation in the next 30 days.

Unauth. Reflected Cross-Site Scripting (XSS) vulnerability in Blindside Networks BigBlueButton plugin <= 3.0.0-beta.4 versions.

Affected products

• Blindsidenetworks Bigbluebutton: before 3.0.0 (fixed in 3.0.0); version 3.0.0 only

Published 2023-09-04. Last modified 2026-06-17.