Mibew Messenger before 3.2.7 allows XSS via a crafted user name.
Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-17476
Reference (s):
- https://github.com/Mibew/mibew/commit/84f5bca0a90b2fe470e35e9b5121548ccce0093c
- https://mibew.org/announcements/2020/07/09/mibew-messenger-3-2-7-has-been-released