CVE-2026-29180: A Fleet team maintainer can transfer hosts from any team via missing source team authorization

CVE-2026-29180 · Severity: high · CVSS 8.8 · Published 2026-03-27

Fleet is open source device management software. Prior to 4.81.1, a broken access control vulnerability in Fleet's host transfer API allows a team maintainer to transfer hosts from any team into their own team, bypassing team isolation boundaries. Once transferred, the attacker gains full control over the stolen hosts, including the ability to execute scripts with root privileges. Version 4.81.1 patches the issue.

Technologies: Fleetdm Fleet, github.com/fleetdm/fleet/v4 (Go). Vendors: Fleetdm, Go.

Quick answers

Is CVE-2026-29180 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-29180 being exploited in the wild.
How severe is CVE-2026-29180?
High severity, with a CVSS score of 8.8, published 27 March 2026.
Which products and versions are affected?
github.com/fleetdm/fleet/v4 (Go) SEMVER:introduced=0,fixed=4.81.1.
Is there a fix for CVE-2026-29180?
Yes. github.com/fleetdm/fleet/v4 (Go): upgrade to 4.81.1 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2026-29180?
Check whether you run Fleetdm Fleet or github.com/fleetdm/fleet/v4 (Go) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • github.com/fleetdm/fleet/v4 (Go): upgrade to 4.81.1 or later
    go get github.com/fleetdm/fleet/v4@v4.81.1

Affected products

  • Fleetdm Fleet
  • github.com/fleetdm/fleet/v4 (Go) SEMVER:introduced=0,fixed=4.81.1

Identifiers

  • CVE-2026-29180
  • GHSA-m2h6-4xpq-qw3m
  • GO-2026-4892

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