CVE-2026-48752

Incus has arbitrary file read+write on host via templates/ symlink in malicious image

publishedCWE-73

Incus is a system container and virtual machine manager. Prior to version 7.2.0, a specially crafted image or instance backup can be used to read or create/write arbitrary files on the host; possibly leading to arbitrary command execution. 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-vxp5-584q-c479

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-vxp5-584q-c479

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-vxp5-584q-c479
exploit · ADP: CISA-ADP

References

https://github.com/lxc/incus/security/advisories/GHSA-vxp5-584q-c479CNA: GitHub_M · x_refsource_CONFIRM
https://github.com/canonical/lxd/security/advisories/GHSA-jpf8-86f3-wp38CNA: GitHub_M · x_refsource_MISC
https://github.com/lxc/incus/security/advisories/GHSA-vxp5-584q-c479ADP: CISA-ADP · exploit
https://github.com/advisories/GHSA-vxp5-584q-c479OSV / GitHub Security Advisories · advisory
https://osv.dev/vulnerability/GHSA-vxp5-584q-c479OSV / 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: none
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 2026-11-05
Retrieved 2026-11-06

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

Disclosure revision
fb18b498bf3c72d47993823d3ad64837a587aa66b69232cd522c3a3686ba02ef

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