CVE-2026-40226 — MEDIUM (6.4)

Q: What is CVE-2026-40226?

CVE-2026-40226 is a vulnerability with a CVSS score of 6.4 (MEDIUM). In nspawn in systemd 233 through 259 before 260, an escape-to-host action can occur via a crafted optional config file.

Q: How severe is CVE-2026-40226?

CVE-2026-40226 has been rated MEDIUM with a CVSS base score of 6.4/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2026-40226?

Check the references section above for vendor advisories and patch information. Affected products include: Systemd Project Systemd.

Vulnerability Description

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

CVSS Score

6.4

MEDIUM

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

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Systemd Project	Systemd	>= 233, < 257.12

Related Weaknesses (CWE)

CWE-348

References

https://github.com/systemd/systemd/security/advisories/GHSA-9mj4-rrc3-gjcxVendor Advisory

FAQ

What is CVE-2026-40226?

CVE-2026-40226 is a vulnerability with a CVSS score of 6.4 (MEDIUM). In nspawn in systemd 233 through 259 before 260, an escape-to-host action can occur via a crafted optional config file.

How severe is CVE-2026-40226?

CVE-2026-40226 has been rated MEDIUM with a CVSS base score of 6.4/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-40226?

Check the references section above for vendor advisories and patch information. Affected products include: Systemd Project Systemd.