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High · 7.5 CVE-2026-104657 EUVD-2026-118358GHSA-cwv8-gh9g-g9wh

Missing Integrity Verification in Progress Software Fiddler Download & Setup Skill

Published Nov 6, 2026 · Updated Nov 9, 2026 · Assigned by ProgressSoftware

Description

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 a predictable path and installs it with administrator privileges, which may allow code execution with root privileges after user approval. A local process may also replace the staged macOS package while the skill waits for approval.

Affected products

VendorProductAffectedFixed
Progress Software Fiddler Download & Setup Skill < 8.3.0 8.3.0

References