by Kastro
Paper/Archive/CVE-2026-62940

CVE-2026-62940

lxc incus — Incus has a project restriction bypass via instance migration config override

EPSS 0.4%CVSS 9.9
critical.is priorityof 100
37
CVSS 9.9 (CNA)9.9 / 10 × 3029.7Not in CISA KEV+300.0EPSS percentile 36.1.361 × 207.2No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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

ProductAffectedFixed inSource
incus< 7.3.0–CNA

Scores by source

GitHub_M (CNA)9.9CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: total

References

refgithub.com/lxc/incus/security/advisories/GHSA-qw5c-v953-38gw