In Zulip Server versions before 1.7.2, there were XSS issues with the frontend markdown processor.
{
"source": "CPE_RANGE",
"cpe": "cpe:2.3:a:zulip:zulip_server:*:*:*:*:*:*:*:*",
"extracted_events": [
{
"introduced": "0"
},
{
"fixed": "1.7.2"
}
]
}