CVE-2026-40226
Medium
Description
In nspawn in systemd 233 through 259 before 260, an escape-to-host action can occur via a crafted optional config file.
SeverityMedium
CVSS6.4
Exploit probability—
ProductSystemd
PublishedApr 10, 2026
First seenApr 10, 2026
Weakness typeCWE-348CWE-348
How to fix
Update
- systemd_project systemd257.12, 258.6, 259.4 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| systemd_project systemd | 233 ≤ v < 257.12, 258 ≤ v < 258.6, 259 ≤ v < 259.4 | 257.12, 258.6, 259.4 |
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