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.
Scores
CVSS v4
9.4
EPSS
0.0015
EPSS Percentile
35.2%
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
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
yes
Technical Impact
total
Details
CWE
CWE-78
Status
published
Products (4)
Canonical/lxd
4.12
Canonical/lxd
5.0.0 - 5.0.6
Canonical/lxd
5.21.0 - 5.21.4
Canonical/lxd
6.0 - 6.7
Published
Mar 12, 2026
Tracked Since
Mar 12, 2026