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Vulnerability Details :

CVE-2026-40226

Summary

Assigner-mitre

Assigner Org ID-8254265b-2729-46b6-b9e3-3dfca2d5bfca

Published At-10 Apr, 2026 | 15:18

Updated At-14 Apr, 2026 | 14:48

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

EPSS History

Score

Latest Score

N/A

Percentile

Latest Percentile

N/A

▼Common Vulnerabilities and Exposures (CVE)

cve.org

Assigner:mitre

Assigner Org ID:8254265b-2729-46b6-b9e3-3dfca2d5bfca

Published At:10 Apr, 2026 | 15:18

Updated At:14 Apr, 2026 | 14:48

▼CVE Numbering Authority (CNA)

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

Affected Products

Vendor

systemd

Product

systemd

Default Status

unaffected

Versions

Affected

From 233 before 260 (custom)

Problem Types

Type	CWE ID	Description
CWE	CWE-348	CWE-348 Use of Less Trusted Source

Type: CWE

CWE ID: CWE-348

Description: CWE-348 Use of Less Trusted Source

Metrics

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

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

References

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

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

Resource: N/A

▼Authorized Data Publishers (ADP)

CISA ADP Vulnrichment

Metrics Other Info

▼National Vulnerability Database (NVD)

nvd.nist.gov

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

Metrics

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

CPE Matches

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

cpe:2.3:a:systemd_project:systemd:*:*:*:*:*:*:*:*

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

cpe:2.3:a:systemd_project:systemd:*:*:*:*:*:*:*:*

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

cpe:2.3:a:systemd_project:systemd:*:*:*:*:*:*:*:*

Weaknesses

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

CWE ID: CWE-348

Type: Primary

Source: cve@mitre.org

References

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

CVE-2026-40226

Credits

Vendors

Products

Metrics (CVSS)

Weaknesses

Attack Patterns

Solution/Workaround

References

EPSS History

Score

Latest Score

N/A

Percentile

Latest Percentile

N/A

Stakeholder-Specific Vulnerability Categorization (SSVC)

Affected Products

Affected

Problem Types

Metrics

Metrics Other Info

Impacts

Solutions

Configurations

Workarounds

Exploits

Credits

Timeline

Replaced By

Rejected Reason

References

Affected Products

Metrics

Metrics Other Info

Impacts

Solutions

Configurations

Workarounds

Exploits

Credits

Timeline

Replaced By

Rejected Reason

References

CISA Catalog

Metrics

CPE Matches

Weaknesses

Evaluator Description

Evaluator Impact

Evaluator Solution

Vendor Statements

References

Change History

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