CVE-2026-48769

Incus has an arbitrary file write on its client due to trusted image hash

publishedCWE-20

Incus is a system container and virtual machine manager. Prior to version 7.2.0, an arbitrary file write exists in the Incus client when a malicious image server returns a crafted `Incus-Image-Hash` header. This can lead to arbitrary command execution as root on the server. Version 7.2.0 patches the issue.

Technical severity9.9 criticalCVSS 3.1 · CNA: GitHub_M

Published2026-08-21Source updated 2026-11-05

Collected2026-11-063 attributed sources

Fixes and workarounds

Fix

github.com/lxc/incus/v7/cmd/incusd (Go): OSV reports a fixed version 7.2.0. Check the advisory for supported release branches.

Source: OSV GHSA-f6m5-xw2g-xc4x

Affected products and versions

Affected products, source version ranges and reporting authorities
Product	Versions	Authority
incus lxc	< 7.2.0 (affected)	CNA: GitHub_M
lxd canonical	>= 4.0.0, < 4.0.11 (affected) >= 5.0.0, < 5.0.7 (affected) >= 5.1.0, < 5.21.5 (affected) >= 6.0.0, < 6.9.0 (affected)	CNA: GitHub_M
github.com/lxc/incus/v7/cmd/incusd `github.com/lxc/incus/v7/cmd/incusd` Go	≥ 0; < 7.2.0 (affected, semver); OSV events: introduced 0; fixed 7.2.0 Source events (semver) `[ { "introduced": "0" }, { "fixed": "7.2.0" } ]` Other versions: unaffected	OSV GHSA-f6m5-xw2g-xc4x

Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.

CVSS assessments

CVSS scores, vectors and reporting authorities
Version / score	Vector	Authority
3.1 / 9.9 critical	`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H`	CNA: GitHub_M

Exploit evidence

https://github.com/lxc/incus/security/advisories/GHSA-f6m5-xw2g-xc4x
exploit · ADP: CISA-ADP

References

https://github.com/lxc/incus/security/advisories/GHSA-f6m5-xw2g-xc4xCNA: GitHub_M · x_refsource_CONFIRM
https://github.com/canonical/lxd/security/advisories/GHSA-pjff-c2wc-f6jmCNA: GitHub_M · x_refsource_MISC
https://github.com/lxc/incus/security/advisories/GHSA-f6m5-xw2g-xc4xADP: CISA-ADP · exploit
https://github.com/advisories/GHSA-f6m5-xw2g-xc4xOSV / GitHub Security Advisories · advisory
https://osv.dev/vulnerability/GHSA-f6m5-xw2g-xc4xOSV / GitHub Security Advisories · osv

Prioritization

CISA known exploited vulnerabilities

No KEV listing in collected sources. This does not establish that exploitation is absent.

EPSS

0.73% estimated probability of exploitation in the next 30 days; percentile 54.44.
Assessed 2026-11-05 by FIRST.

SSVC

Exploitation: poc
Automatable: no
Technical impact: total

ADP: CISA-ADP · 2026-08-21

Provenance

CNA: GitHub_M
Source updated 2026-11-05
Retrieved 2026-11-06

OSV / GitHub Security Advisories (partial: 1/2 referenced advisories verified)
Source updated 2026-07-07
Retrieved 2026-11-06

FIRST EPSS
Source updated Not reported
Retrieved 2026-11-06

Disclosure revision
970ddb07678fdf9637cccd1c7d65b0151dcba69fb82622061354f99175b81b56

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