Incus has a restricted project bypass leading to arbitrary command execution

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS

9.9 · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

EPSS

• CVE-2026-48751: 0.64% estimated exploitation activity in the next 30 days; percentile 50.58 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

Summary Instance snapshots ignore the restricted.containers.lowlevel=block setting; allowing for arbitrary command execution on the Incus server by abusing lowlevel hooks such as raw.lxc and raw.qemu. Details Instance snapshots ignore the restricted.containers.lowlevel=block setting; allowing for arbitrary command execution on the Incus server by abusing lowlevel hooks such as raw.lxc and raw.qemu. As snapshots can be moved from one server to another, a malicious instance+snapshot can be crafted locally, moved to a restricted project and the snapshot restored for arbitrary command execution. In practice, this allows a malicious actor to execute arbitrary commands on the host with root privileges. PoC Impact - Bypass of project restrictions. - Arbitrary command execution on the Incus server.

Published by the source

26 Jun 2026, 18:33 UTC

Last modified by the source

26 Jun 2026, 18:33 UTC

Source last checked

26 Oct 2026, 15:24 UTC

1. Revision 1 · created · 26 Oct 2026

   Published from ghsa record GHSA-48q5-w887-33wv

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# Patch Next advisory brief: CVE-2026-48751

Advisory: Incus has a restricted project bypass leading to arbitrary command execution
IDs: CVE-2026-48751, GHSA-48q5-w887-33wv
Record: https://patchnext.com/advisories/cve-2026-48751 (revision 1, source checked 26 Oct 2026, 15:24 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Critical (CVSS 9.9)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: github.com/lxc/incus/v7/cmd/incusd 7.2.0. A vendor fix does not mean a deployment is fixed.

## Affected components
- Go github.com/lxc/incus/v7/cmd/incusd: affected < 7.2.0; fixed in 7.2.0

## Suggested inspection (read-only)
- Go github.com/lxc/incus/v7/cmd/incusd: check the installed version with your package manager.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on github.com/lxc/incus/v7/cmd/incusd.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://github.com/advisories/GHSA-48q5-w887-33wv (GitHub-reviewed advisory GHSA-48q5-w887-33wv lists affected ranges: Go github.com/lxc/incus/v7/cmd/incusd >=0 <7.2.0)

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