htmlfile in lib/transport/htmlfile.js in SockJS before 0.3.0 is vulnerable to Reflected XSS via the /htmlfile c (aka callback) parameter.
https://snyk.io/vuln/SNYK-JS-SOCKJS-548397
https://github.com/theyiyibest/Reflected-XSS-on-SockJS/issues/1
https://www.sockjs.org
https://github.com/theyiyibest/Reflected-XSS-on-SockJS
Source: Mitre, NVD
Published: 2020-02-10
Updated: 2026-06-17
Base Score: 4.3
Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:N
Severity: Medium
Base Score: 6.1
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS: 0.00397