CVE-2026-86158 [HIGH] – Missing authentication in the local .NET backend (Fiddler.WebUi) of Progress Software Fidd

Missing authentication in the local .NET backend (Fiddler.WebUi) of Progress Software Fiddler Everywhere 8.0.2 allows a local unauthenticated attacker to mint OAuth tokens and read the machine-in-the-middle root certificate through an unauthenticated localhost HTTP and SignalR RPC channel.