CVE-2017-5016 (chrome)
Blink in Google Chrome prior to 56.0.2924.76 for Linux, Windows and Mac, and 56.0.2924.87 for Android, failed to prevent certain UI elements from being displayed by non-visible pages, which allowed a remote attacker to show certain UI elements on a page they don’t control via a crafted HTML page.
Source: CVE-2017-5016 (chrome)