In vFairs 3.3, any user logged in to a vFairs virtual conference or event can modify any other users profile information to include a cross-site scripting payload. The user data stored by the database includes HTML tags that are intentionally rendered out onto the page, and this can be abused to perform XSS attacks.
Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-26680
Reference (s):
- http://vfairs.com
- https://www.huntress.com/blog/zero-day-vulnerabilities-in-popular-event-management-platforms-could-leave-msps-open-to-attack