CVE-2026-34389

Fleet is open source device management software. Prior to 4.81.0, Fleet contained an issue in the user invitation flow where the email address provided during invite acceptance was not validated against the email address associated with the invite. An attacker who obtained a valid invite token could create an account under an arbitrary email address while inheriting the role granted by the invite, including global admin. Version 4.81.0 patches the issue.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/fleetdm/fleet/security/advisories/GHSA-4f9r-x588-pp2h	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:fleetdm:fleet:*:*:*:*:*:*:*:*

History

02 Apr 2026, 19:41

Type	Values Removed	Values Added
First Time		Fleetdm fleet Fleetdm
References	~~() https://github.com/fleetdm/fleet/security/advisories/GHSA-4f9r-x588-pp2h -~~	() https://github.com/fleetdm/fleet/security/advisories/GHSA-4f9r-x588-pp2h - Vendor Advisory
CPE		cpe:2.3:a:fleetdm:fleet::::::::
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 6.5

27 Mar 2026, 20:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-03-27 20:16

Updated : 2026-04-02 19:41

NVD link : CVE-2026-34389

Mitre link : CVE-2026-34389

CVE.ORG link : CVE-2026-34389

JSON object : View

Products Affected

fleetdm

fleet

CWE

CWE-287

Improper Authentication

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