CVE-2026-26060: GO-2026-4888 - Fleet: Password reset tokens remain valid after password change for 24 hours in github.com/fleetdm/fleet

CVE-2026-26060 · Severity: high · CVSS 8.8 · Published 2026-03-27

Fleet is open source device management software. Prior to 4.81.0, a vulnerability in Fleet’s password management logic could allow previously issued password reset tokens to remain valid after a user changes their password. As a result, a stale password reset token could be reused to reset the account password even after a defensive password change. Version 4.81.0 patches the issue.

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

Quick answers

Is CVE-2026-26060 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-26060 being exploited in the wild.
How severe is CVE-2026-26060?
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, SEMVER:introduced=0,fixed=4.43.5-0.20260113202849-bbc1aef2987d.
Is there a fix for CVE-2026-26060?
Yes. github.com/fleetdm/fleet/v4 (Go): upgrade to 4.43.5-0.20260113202849-bbc1aef2987d or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2026-26060?
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 4.43.5-0.20260113202849-bbc1aef2987d or later
    go get github.com/fleetdm/fleet/v4@v4.43.5-0.20260113202849-bbc1aef2987d

Affected products

  • Fleetdm Fleet
  • github.com/fleetdm/fleet/v4 (Go) SEMVER:introduced=0, SEMVER:introduced=0,fixed=4.43.5-0.20260113202849-bbc1aef2987d

Identifiers

  • CVE-2026-26060
  • GHSA-3458-r943-hmx4
  • GO-2026-4888

This page as Markdown. Free to reuse under CC BY 4.0 with a link back.