CVE-2026-22808

fleetdm/fleet is open source device management software. Prior to versions 4.78.2, 4.77.1, 4.76.2, 4.75.2, and 4.53.3, if Windows MDM is enabled, an unauthenticated attacker can exploit this XSS vulnerability to steal a Fleet administrator's authentication token (FLEET::auth_token) from localStorage. This could allow unauthorized access to Fleet, including administrative access, visibility into device data, and modification of configuration. Versions 4.78.2, 4.77.1, 4.76.2, 4.75.2, and 4.53.3 fix the issue. If an immediate upgrade is not possible, affected Fleet users should temporarily disable Windows MDM.

CVSS

No CVSS.

References

Link	Resource
https://github.com/fleetdm/fleet/security/advisories/GHSA-gfpw-jgvr-cw4j

Configurations

No configuration.

History

No history.

Information

Published : 2026-01-21 22:15

Updated : 2026-01-26 15:04

NVD link : CVE-2026-22808

Mitre link : CVE-2026-22808

CVE.ORG link : CVE-2026-22808

JSON object : View

Products Affected

No product.

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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