Related Vulnerabilities: CVE-2020-12390  

Incorrect origin serialization of URLs with IPv6 addresses could lead to incorrect security checks.

Severity Medium

Remote Yes

Type Insufficient validation

Description

Incorrect origin serialization of URLs with IPv6 addresses could lead to incorrect security checks.

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

https://bugzilla.mozilla.org/show_bug.cgi?id=1141959