Insufficient policy enforcement in Downloads in Google Chrome prior to 88.0.4324.96 allowed an attacker who convinced a user to download files to bypass navigation restrictions via a crafted HTML page.
https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-21133
https://chromereleases.googleblog.com/2021/01/stable-channel-update-for-desktop_19.html