description: When network partitioning was enabled, e.g. as a result of Enhanced Tracking Protection settings, a TLS error page would allow the user to override an error on a domain which had specified HTTP Strict Transport Security (which implies that the error should not be override-able.) This issue did not affect the network connections, and they were correctly upgraded to HTTPS automatically. This vulnerability affects Firefox < 90.
problem types: HSTS errors could be overridden when network partitioning was enabled
affected:
{
product: Firefox
vendor: Mozilla
versions:
lessThan: 90, status: affected, version: unspecified, versionType: custom
}