web/controllers/ApiController.groovy in BigBlueButton before 2.2.29 lacks certain parameter sanitization, as demonstrated by accepting control characters in a user name.
{ "versions": [ { "introduced": "0" }, { "fixed": "2.2.29" } ] }
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-28954.json"