CRITICAL9.8
GO-2026-4335
Fleet has a JWT signature bypass vulnerability in Azure AD MDM enrollment in github.com/fleetdm/fleet
Quick fix
GO-2026-4335 — github.com/fleetdm/fleet/v4: upgrade to the fixed version with the command below.
go get github.com/fleetdm/fleet/v4@v4.75.2Details
Fleet has a JWT signature bypass vulnerability in Azure AD MDM enrollment in github.com/fleetdm/fleet
Are you affected?
Enter the version of the package you're using.
Affected packages
Go/github.com/fleetdm/fleet/v4
Introduced in:
4.75.0Fixed in: 4.75.2Fix
go get github.com/fleetdm/fleet/v4@v4.75.2