CVE-2020-28954: Bigbluebutton

Medium severity, CVSS 5.3. EPSS: 1.3% chance of exploitation in the next 30 days.

web/controllers/ApiController.groovy in BigBlueButton before 2.2.29 lacks certain parameter sanitization, as demonstrated by accepting control characters in a user name.

Affected products

• Bigbluebutton Bigbluebutton: before 2.2.29 (fixed in 2.2.29)

Published 2020-11-19. Last modified 2026-06-17.