CVE-2026-86158 | Progress Telerik Fiddler Everywhere up to 8.1.x Fiddler.WebUi missing authentication (EUVD-2026-88649)

September 29, 2026 Yanac

A vulnerability, which was classified as problematic, was found in Progress Telerik Fiddler Everywhere up to 8.1.x. This vulnerability affects unknown code of the component Fiddler.WebUi. Executing a manipulation can lead to missing authentication.

This vulnerability appears as CVE-2026-86158. The attack requires local access. There is no available exploit.

You should upgrade the affected component.VulDB Recent EntriesRead More