CVE-2026-28384
lxd - security update
EPSS 0.25%
Description
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.
How to fix CVE-2026-28384
To remediate CVE-2026-28384, upgrade the affected package to a fixed version below.
- —upgrade to 6.0.4-2+deb13u5 or later
- —upgrade to 6.0.4-2+deb13u5 or later
- —upgrade to 5.0.2-5+deb12u4 or later
- —upgrade to 5.0.2-5+deb12u4 or later
Is CVE-2026-28384 being exploited?
Low — EPSS is 0.3%, meaning exploitation activity has not been observed at scale.
Affected packages (4)
- from 0, < 6.0.4-2+deb13u5
- from 0, < 6.0.4-2+deb13u5
- from 0, < 5.0.2-5+deb12u4
- from 0, < 5.0.2-5+deb12u4
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |