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OpenAdvisories
Critical · 9.9 CVE-2026-48755 EUVD-2026-63982GHSA-v6mj-8pf4-hhw4GO-2026-5808

Incus has an argument injection in backup compression algorithm leading to AFW and ACE

Published Aug 21, 2026 · Updated Nov 5, 2026 · Assigned by GitHub_M

Description

Incus is a system container and virtual machine manager. Prior to version 7.1.0, improper validation of user-provided backup compression algorithm leads to argument injection in the constructed command line. This leads to an arbitrary file write on the host, possibly leading to arbitrary command execution. Version 7.1.0 patches the issue.

Affected products

VendorProductAffectedFixed
lxc incus < 7.2.0 —
canonical lxd >= 4.0.0, < 4.0.11, >= 5.0.0, < 5.0.7, >= 5.1.0, < 5.21.5, >= 6.0.0, < 6.9.0 —

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

ReleasePackageFixed inAdvisory
Debian 14 incus 7.0.0-5 —
Debian 13 incus 6.0.4-2+deb13u8 —
Debian 13 lxd 5.0.2+git20231211.1364ae4-9+deb13u7 —
Debian 12 lxd No fix yet —
ReleasePackageFixed inAdvisory
Ubuntu 26.10 incus No fix yet —
Ubuntu 25.10 incus No fix yet —
Ubuntu 20.04 LTS lxd No fix yet —
Show 4 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Ubuntu Pro 26.04 LTS incus No fix yet —
Ubuntu Pro 24.04 LTS incus No fix yet —
Ubuntu Pro 18.04 LTS lxd No fix yet —
Ubuntu Pro 16.04 LTS lxd No fix yet —
ReleasePackageFixed inAdvisory
openSUSE Tumbleweed incus 7.4-1.1 openSUSE-SU-2026:11651-1
openSUSE Leap 16.0 govulncheck-vulndb 0.0.20260723T184607-160000.1.1 openSUSE-SU-2026:21483-1
ReleasePackageFixed inAdvisory
Alpine v3.24 incus 7.0.1-r0 —

Affected packages

EcosystemPackageAffectedFixedRecord
Go github.com/lxc/incus all versions — GO-2026-5808
Go github.com/lxc/incus/v6 all versions — GO-2026-5808
Go github.com/lxc/incus/v7 < 7.2.0 7.2.0 GO-2026-5808
Go github.com/lxc/incus/v7/cmd/incusd < 7.2.0 7.2.0 GHSA-v6mj-8pf4-hhw4

Advisories 2

References