htmlfile in lib/transport/htmlfile.js in SockJS before 0.3.0 is vulnerable to Reflected XSS via the /htmlfile c (aka callback) parameter.
{
"nvd_published_at": "2020-02-10T03:15:00Z",
"severity": "MODERATE",
"cwe_ids": [
"CWE-79"
],
"github_reviewed": true,
"github_reviewed_at": "2021-04-06T21:51:28Z"
}