CVE-2026-40226

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Summary

CVECVE-2026-40226
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-04-10 16:16:33 UTC
Updated2026-04-17 22:02:15 UTC
DescriptionIn nspawn in systemd 233 through 259 before 260, an escape-to-host action can occur via a crafted optional config file.

Risk And Classification

Primary CVSS: v3.1 6.4 MEDIUM from [email protected]

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

EPSS: 0.000060000 probability, percentile 0.003670000 (date 2026-04-15)

Problem Types: CWE-348 | CWE-348 CWE-348 Use of Less Trusted Source

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary6.4MEDIUMCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
3.1CNACVSS6.4MEDIUMCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
High
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Systemd Project Systemd All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Systemd Systemd affected 233 260 custom Not specified

References

ReferenceSourceLinkTags
github.com/systemd/systemd/security/advisories/GHSA-9mj4-rrc3-gjcx [email protected] github.com Vendor Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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