What is CVE-2026-62867?

CVE-2026-62867 is a critical-severity vulnerability in Lxc Incus, classified under Argument Injection. CVSS score: 9.9/10. Published 2026-08-21.

How severe is CVE-2026-62867?

Critical severity. CVSS v3 base score is 9.9 out of 10.

Vulnerability in Lxc Incus

CVE-2026-62867

Incus is a system container and virtual machine manager. Prior to version 7.3.0, improper validation of user-provided `block.create_options` in storage volume configuration leads to argument injection in the constructed filesystem creation command line. This allows a project-scoped user to inject arbitrary arguments into the binary executed as root. Version 7.3.0 patches the issue.

CVSS v3 metric

CVSS v3 base score 9.9 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.

Affected products

Lxc Incus — versions < 7.3.0

Weakness classification (CWE)

CWE-88 — Argument Injection

References

https://github.com/lxc/incus/security/advisories/GHSA-q7xw-r4w2-2wcm (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-62867?: CVE-2026-62867 is a critical-severity vulnerability in Lxc Incus, classified under Argument Injection. CVSS score: 9.9/10. Published 2026-08-21.
How severe is CVE-2026-62867?: Critical severity. CVSS v3 base score is 9.9 out of 10.