An issue was discovered in Roundcube Webmail before 1.3.12 and 1.4.x before 1.4.5. include/rcmailoutputhtml.php allows XSS via the username template object.
{ "urgency": "not yet assigned" }
"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2020-13964.json"