---
id: CVE-2026-62313
title: Incus is a system container and virtual machine manager
summary: >-
  Incus is a system container and virtual machine manager. Prior to version
  7.3.0, project-level enforcement of `restricted.containers.privilege=isolated`
  can be trivially bypassed, allowing a user to create a non-isolated (shared
  host idm…
severity: medium
cvss: 4.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L'
cwe:
  - CWE-863
published: '2026-08-21'
updated: '2026-09-18'
sourceUpdated: '2026-09-18T20:09:01.757'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-62313'
references:
  - url: 'https://github.com/lxc/incus/security/advisories/GHSA-53cg-qvg7-m8vg'
    label: security-advisories@github.com
  - url: 'https://github.com/lxc/incus/security/advisories/GHSA-53cg-qvg7-m8vg'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
epss: 0.00256
epssPercentile: 0.1758
ingestedAt: '2026-09-18T20:51:25.653Z'
---

## Overview

Incus is a system container and virtual machine manager. Prior to version 7.3.0, project-level enforcement of `restricted.containers.privilege=isolated` can be trivially bypassed, allowing a user to create a non-isolated (shared host idmap) container in a project that is configured to forbid them. The restriction only rejects an explicitly set `security.idmap.isolated=false` (or empty) and fails to enforce anything when the key is omitted entirely. Because an unset `security.idmap.isolated` defaults to `false` (non-isolation), a user simply leaves the key out and obtains exactly the container state the restriction is meant to forbid. This defeats the tenant-isolation guarantee the restriction exists to provide. Containers in the project share the host uid/gid map instead of receiving unique, non-overlapping ranges, weakening the isolation boundary between co-tenant containers and the host. Version 7.3.0 patches the issue.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.