Vulnerability · Published Aug 21, 2026 · Assigned by GitHub_M

CVE-2026-62867Incus has an argument injection in storage volume block.create_options that leads to arbitrary command execution

Critical 9.9

In plain English

A critical-severity argument injection in incus from lxc. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 44% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)9.9Critical

Exploit odds (30 days)0.5%top 55.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Debian:13	incus	6.0.4-2+deb13u9	DEBIAN-CVE-2026-62867
Debian:14	incus	7.0.1-2	DEBIAN-CVE-2026-62867
Ubuntu:26.10	incus	no fix listed	UBUNTU-CVE-2026-62867

Affected products (as reported)

Vendor	Product	Versions
lxc	incus	< 7.3.0

Weakness: CWE-88 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

References

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