A vulnerability affecting desktop versions of four popular web browsers could be exploited by advertisers, malicious actors, and other third parties to track and profile users online. Researchers tested Chrome, Firefox, Safari and the Tor Browser and found them to be vulnerable to this type of attack ‘ despite implemented safety mechanisms. The issue has been discussed on the Chromium bug-tracker and is planned to be fixed soon. The team has submitted bug reports to Apple, Google and Mozilla, and hopes that other browser creators will follow suit.
Source: https://www.helpnetsecurity.com/2021/05/17/track-users-online/