BigBlueButton Greenlight before 2.5.6 allows HTTP header (Host and Origin) attacks, which can result in Account Takeover if a victim follows a spoofed password-reset link.
Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-26163
Reference (s):
- https://github.com/bigbluebutton/greenlight/pull/1543
- https://github.com/bigbluebutton/greenlight/releases/tag/release-2.5.6
- https://www.sakshamanand.com/host-header-injection-bigbluebutton/