CVE-2026-104657: Progress Software Fiddler Download & Setup Skill: Missing integrity verification in the Progress Software Fiddler Download and Setup Skill on Linux, macOS, and Windows…

Missing integrity verification in the Progress Software Fiddler Download and Setup Skill on Linux, macOS, and Windows which allows an attacker to compromise or influence a release component and execute attacker-controlled code when a user runs the skill. On macOS, the skill stages the package at ...

CVE-2026-86158

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...

CVE-2026-86158

Progress Software Fiddler Everywhere 8.0.2 contains a vulnerability due to missing authentication in its local .NET backend (Fiddler.WebUi ). A local unauthenticated attacker can exploit unauthenticated localhost HTTP and SignalR RPC channels to mint OAuth tokens and read the machine-in-the-middl...

EUVD-2026-88649

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...

CVE-2026-86158: Missing Authentication for Critical Function

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...