Inappropriate allowance of the setDownloadBehavior devtools protocol feature in Extensions in Google Chrome prior to 71.0.3578.80 allowed a remote attacker with control of an installed extension to access files on the local file system via a crafted Chrome Extension.
https://access.redhat.com/errata/RHSA-2018:3803
https://chromereleases.googleblog.com/2018/12/stable-channel-update-for-desktop.html