CVE-2026-28384

EUVD-2026-11585
An improper sanitization of the compression_algorithm parameter in Canonical LXD allows an authenticated, unprivileged user to execute commands as the LXD daemon on the LXD server via API calls to the image and backup endpoints. This issue affected LXD from 4.12 through 6.6 and was fixed in the snap versions 5.0.6-e49d9f4 (channel 5.0/stable), 5.21.4-1374f39 (channel 5.21/stable), and 6.7-1f11451 (channel 6.0 stable). The channel 4.0/stable is not affected as it contains version 4.0.10.
OS Command Injection
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
canonicalCNA
9.4 CRITICAL
NETWORK
LOW
LOW
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 40%
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
canonicallxd
6.0 ≤
𝑥
< 6.7
CNA
canonicallxd
5.21.0 ≤
𝑥
< 5.21.4
CNA
canonicallxd
5.0.0 ≤
𝑥
< 5.0.6
CNA
canonicallxd
4.12
CNA
Debian logo
Debian Releases
Debian Product
Codename
incus
forky
7.0.1-1
fixed
sid
7.0.1-1
fixed
trixie
6.0.4-2+deb13u8
fixed
trixie (security)
6.0.4-2+deb13u8
fixed
lxd
bookworm
vulnerable
bookworm (security)
vulnerable
trixie
5.0.2+git20231211.1364ae4-9+deb13u7
fixed
trixie (security)
5.0.2+git20231211.1364ae4-9+deb13u7
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
lxd
bionic
not-affected
focal
not-affected
jammy
dne
noble
dne
questing
dne
xenial
not-affected