CVE-2026-34387

Fleet vulnerable to OS command injection via crafted software package metadata in uninstall scripts

State: Published
Severity: 5.7 Medium
Published: Mar 27, 2026
Updated: Mar 27, 2026
Reserved: Mar 27, 2026

Description

Fleet is open source device management software. Prior to 4.81.1, a command injection vulnerability in Fleet's software installer pipeline allows an attacker to achieve arbitrary code execution as root (macOS/Linux) or SYSTEM (Windows) on managed hosts when an uninstall is triggered for a crafted software package. Version 4.81.1 patches the issue.

Scores

CVSS	Score	Vector	Source
4.0	5.7 Medium	CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U	GitHub_M

Weaknesses

CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Affected Products

Product	Versions
fleetfleetdm	< 4.81.1Affected

References

https://github.com/fleetdm/fleet/security/advisories/GHSA-7rhw-5mpv-gp4h

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