CVE-2017-5026
Google Chrome prior to 56.0.2924.76 for Linux, Windows and Mac, failed to prevent alerts from being displayed by swapped out frames, which allowed a remote attacker to show alerts on a page they don’t control via a crafted HTML page.
Date published : 2017-02-17
http://www.securityfocus.com/bid/95792
https://chromereleases.googleblog.com/2017/01/stable-channel-update-for-desktop.html