CVE-2026-62313
published 2026-08-21CVE-2026-62313: 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…
PriorityP422medium4.3CVSS 3.1
AVNACLPRLUINSUCNINAL
EPSS
0.21%
11.5th percentile
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.
Affected
1 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| lxc | incus | < 7.3.0 | 7.3.0 |
Stop checking back — get the weekly exploitation signal.
Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.
No advisories linked to this vulnerability.
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2026-62313 incus: Incus: Project restriction bypass weakens container isolation [fedora-all]
bugzilla·2026-08-24·CVSS 4.3
CVE-2026-62313 [MEDIUM] CVE-2026-62313 incus: Incus: Project restriction bypass weakens container isolation [fedora-all]
CVE-2026-62313 incus: Incus: Project restriction bypass weakens container isolation [fedora-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
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 `securi
Bugzilla
CVE-2026-62313 github.com/lxc/incus: Incus: Project restriction bypass weakens container isolation
bugzilla·2026-08-21·CVSS 4.3
CVE-2026-62313 [MEDIUM] CVE-2026-62313 github.com/lxc/incus: Incus: Project restriction bypass weakens container isolation
CVE-2026-62313 github.com/lxc/incus: Incus: Project restriction bypass weakens container isolation
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 restrictio
2026-08-21
Published