Fleet: Unauthenticated Android device disenrollment vulnerability via Pub/Sub endpoint
Date: 2026-02
Affected: go/github.com/fleetdm/fleet/v4
Attack vector: auth-bypass
Category: vulnerability-disclosure
Severity: Medium
CVE: CVE-2026-24004
CWE: CWE-306
CWE-862

### Summary A vulnerability in Fleet’s Android MDM Pub/Sub handling could allow unauthenticated requests to trigger device unenrollment events. This may result in unauthorized removal of individual Android devices from Fleet management. ### Impact If Android MDM is enabled, an attacker could send a crafted request to the Android Pub/Sub endpoint to unenroll a targeted Android device from Fleet without authentication. This issue does not grant access to Fleet, allow execution of commands, or provide visibility into device data. Impact is limited to disruption of Android device management for the affected device. ### Workarounds If an immediate upgrade is not possible, affected Fleet users should temporarily disable Android MDM. ### For more information If there any questions or comments about this advisory: Email Fleet at [security@fleetdm.com](mailto:security@fleetdm.com) Join #fleet in [osquery Slack](https://join.slack.com/t/osquery/shared_invite/zt-h29zm0gk-s2DBtGUTW4CFel0f0IjTEw) ### Credits Fleet thanks @secfox-ai for responsibly reporting this issue.


Mitigations:

Architectural layers (MAESTRO):