What’s Vulnerable › Vulnerabilities
CVE-2026-40226
- Severity: medium (CVSS 6.4 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.1% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-04-10 · updated 2026-06-17
- Weakness: CWE-348
Description
In nspawn in systemd 233 through 259 before 260, an escape-to-host action can occur via a crafted optional config file.
Affected products
- systemd: from 233 before 257.12; from 258 before 258.6; from 259 before 259.4 — fixed in 257.12, 258.6, 259.4
How to fix
Upgrade to a fixed version: systemd 257.12, 258.6, 259.4. Check the vendor advisory for mitigations.
References
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