Type confusion in V8 in Google Chrome prior to 90.0.4430.85 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page.
https://www.tenable.com/cyber-exposure/2021-threat-landscape-retrospective
https://www.debian.org/security/2021/dsa-4906
https://security.gentoo.org/glsa/202104-08
https://chromereleases.googleblog.com/2021/04/stable-channel-update-for-desktop_20.html