Insufficient validation of untrusted input in Extensions in Google Chrome prior to 90.0.4430.72 allowed an attacker who convinced a user to install a malicious extension to access local files via a crafted Chrome Extension. (Chromium security severity: Medium)
https://euvd.enisa.europa.eu/vulnerability/EUVD-2021-34152
https://chromereleases.googleblog.com/2021/04/stable-channel-update-for-desktop_14.html