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NVD Vulnerability Details :

CVE-2026-40226

Analyzed

Source-cve@mitre.org

Published At-10 Apr, 2026 | 16:16

Updated At-17 Apr, 2026 | 22:02

In nspawn in systemd 233 through 259 before 260, an escape-to-host action can occur via a crafted optional config file.

Date Added	Due Date	Vulnerability Name	Required Action
	N/A

Type	Version	Base score	Base severity	Vector
Secondary	3.1	6.4	MEDIUM	CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

Type: Secondary

Version: 3.1

Base score: 6.4

Base severity: MEDIUM

Vector:

CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

systemd_project>>systemd>>Versions from 233(inclusive) to 257.12(exclusive)

systemd_project>>systemd>>Versions from 258(inclusive) to 258.6(exclusive)

systemd_project>>systemd>>Versions from 259(inclusive) to 259.4(exclusive)

CWE ID	Type	Source
CWE-348	Primary	cve@mitre.org

CWE ID: CWE-348

Type: Primary

Source: cve@mitre.org

Hyperlink	Source	Resource
https://github.com/systemd/systemd/security/advisories/GHSA-9mj4-rrc3-gjcx	cve@mitre.org	Vendor Advisory

Hyperlink: https://github.com/systemd/systemd/security/advisories/GHSA-9mj4-rrc3-gjcx

Source: cve@mitre.org

Resource:

Vendor Advisory