Insufficient policy enforcement in Omnibox in Google Chrome prior to 63.0.3239.84 allowed a socially engineered user to XSS themselves by dragging and dropping a javascript: URL into the URL bar.
https://www.debian.org/security/2017/dsa-4064
https://security.gentoo.org/glsa/201801-03
https://chromereleases.googleblog.com/2017/12/stable-channel-update-for-desktop.html