CVE-2026-24004: Fleet Unauthenticated Android Device Disenrollment Vulnerability Vulnerability

MODERATE
Advisory Identifier: GHSA-9pm7-6g36-6j78
Share
CWE-306 CWE-862
Published
Advisory Summary

CVE-2026-24004 is a MODERATE unauthenticated android device disenrollment vulnerability vulnerability (CWE-306: Missing Authentication for Critical Function) affecting Fleet libraries in the Go ecosystem. The issue involves unauthenticated android device disenrollment vulnerability via pub/sub endpoint. Remediation is available by upgrading affected packages to version 4.80.1.

CVE-2026-24004 at a Glance

CVE Identifier CVE-2026-24004
GHSA Identifier GHSA-9pm7-6g36-6j78
Severity MODERATE
CVSS v3.1 Base Score N/A
CWE Classification CWE-306: Missing Authentication for Critical Function
Affected Product Fleet
Package Ecosystem Go
Published Date
Last Updated

How to Fix CVE-2026-24004

To remediate this vulnerability, upgrade all affected Fleet dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

github.com/fleetdm/fleet/v4 fixed: 4.80.1 
Upgrade github.com/fleetdm/fleet/v4 to 4.80.1
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for github.com/fleetdm/fleet/v4

How to Check if You Are Affected

To determine whether your application is affected by CVE-2026-24004, inspect your project dependencies for Fleet:

inspect dependencies for github.com/fleetdm/fleet/v4

Analyze the terminal output to locate any version of Fleet in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 4.80.1), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-306: Missing Authentication for Critical Function, where the product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources. In Fleet, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

### 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.

CVE-2026-24004 Affected Fleet Versions

1 component(s)
Fixed Versions:
4.80.1
Product / Package Ecosystem Affected Versions Fixed Version
github.com/fleetdm/fleet/v4
golang/github.com/fleetdm/fleet/v4
Go
< 4.80.1
4.80.1

References

GitHub Advisory / Wiki ADVISORY
https://github.com/fleetdm/fleet/security/advisories/GHSA-9pm7-6g36-6j78
NVD — CVE-2026-24004 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-24004
Security Fix Commit FIX COMMIT
https://github.com/fleetdm/fleet/commit/24dd2257ae7127680a2f6cd1a4eee58a9c95dd34
Fleet Source Repository REPOSITORY
https://github.com/fleetdm/fleet

Frequently Asked Questions

What is CVE-2026-24004?
CVE-2026-24004 is a security vulnerability in Fleet involving Unauthenticated Android device disenrollment vulnerability via Pub/Sub endpoint under CWE-306: Missing Authentication for Critical Function.
Which Fleet versions are affected?
Affected versions include releases prior to 4.80.1 across affected packages: github.com/fleetdm/fleet/v4.
What version fixes CVE-2026-24004?
Upgrading to 4.80.1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is github.com/fleetdm/fleet/v4 affected?
Yes, github.com/fleetdm/fleet/v4 is affected in releases prior to 4.80.1. Upgrade your dependency to 4.80.1 or later.
What CWE is associated with CVE-2026-24004?
CVE-2026-24004 is classified under CWE-306: Missing Authentication for Critical Function (The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.).
How can I check Go dependencies for CVE-2026-24004?
Run the dependency tree command: 'inspect dependencies for github.com/fleetdm/fleet/v4'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-9pm7-6g36-6j78",
  "modified" : "2026-02-26T19:38:56Z",
  "published" : "2026-02-26T19:38:56Z",
  "aliases" : [ "CVE-2026-24004" ],
  "summary" : "Fleet: Unauthenticated Android device disenrollment vulnerability via Pub/Sub endpoint ",
  "details" : "### Summary\n\nA 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.\n\n### Impact\n\nIf 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.\n\nThis 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.\n\n### Workarounds\n\nIf an immediate upgrade is not possible, affected Fleet users should temporarily disable Android MDM.\n\n### For more information\n\nIf there any questions or comments about this advisory:\n\nEmail Fleet at [security@fleetdm.com](mailto:security@fleetdm.com)\nJoin #fleet in [osquery Slack](https://join.slack.com/t/osquery/shared_invite/zt-h29zm0gk-s2DBtGUTW4CFel0f0IjTEw)\n\n### Credits\n\nFleet thanks @secfox-ai for responsibly reporting this issue.",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:L"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/fleetdm/fleet/v4"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "4.80.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/fleetdm/fleet/security/advisories/GHSA-9pm7-6g36-6j78"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-24004"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/fleetdm/fleet/commit/24dd2257ae7127680a2f6cd1a4eee58a9c95dd34"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/fleetdm/fleet"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-306", "CWE-862" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-02-26T19:38:56Z",
    "nvd_published_at" : "2026-02-26T03:16:04Z"
  }
}