More information about this security flaw is available in the following bug: https://bugzilla.redhat.com/show_bug.cgi?id=2311152 Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
obs-cef does not contain express.js. Please consider improving the script that is filing these bugs, it's silly to file bugs against a package just because a Markdown file mentions the vulnerable package name (see bug 2290917).