Vulnerability · Published Aug 21, 2026 · Assigned by GitHub_M
CVE-2026-62940Incus has a project restriction bypass via instance migration config override
Critical 9.9
In plain English
A critical-severity missing authorization 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 0.4% (higher than 36% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
Incus is a system container and virtual machine manager. Prior to version 7.3.0, when migrating an instance to another cluster member, user-supplied configuration overrides (including security-critical keys like `security.privileged` and `raw.lxc`) are applied without any project restriction enforcement, allowing a restricted project user to escalate to a privileged container and escape to the host. 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-2026-62940 |
| Debian:14 | incus | 7.0.1-2 | DEBIAN-CVE-2026-62940 |
| Ubuntu:26.10 | incus | no fix listed | UBUNTU-CVE-2026-62940 |
Affected products (as reported)
Weakness: CWE-862 · 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-qw5c-v953-38gw x_refsource_CONFIRM