CVE-2020-25820: Bigbluebutton

Medium severity, CVSS 6.5. EPSS: 10.5% chance of exploitation in the next 30 days.

BigBlueButton before 2.2.7 allows remote authenticated users to read local files and conduct SSRF attacks via an uploaded Office document that has a crafted URL in an ODF xlink field.

Affected products

• Bigbluebutton Bigbluebutton: before 2.2.27 (fixed in 2.2.27)

Published 2020-10-21. Last modified 2026-06-17.