Related Vulnerabilities: CVE-2020-12394  

A logic flaw in our location bar implementation could have allowed a local attacker to spoof the current location by selecting a different origin and removing focus from the input element.

Severity Low

Remote Yes

Type Content spoofing

Description

A logic flaw in our location bar implementation could have allowed a local attacker to spoof the current location by selecting a different origin and removing focus from the input element.

AVG-1148 firefox 75.0-1 76.0-1 Critical Testing

https://bugzilla.mozilla.org/show_bug.cgi?id=1628288