CVE-2026-28384CWE-78command-injection

CVE-2026-28384

Critical · published March 12, 2026

CVSS v3.1
9.9
EPSS
1%
Percentile
59.2
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
9.9 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00896 · 59.2th percentile
Weakness
CWE-78 · Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Published
2026-03-12T19:16Z
Affected products (3)
ProductVersionsFixed in
canonical/lxd≥ 4.12, < 5.0.65.0.6
canonical/lxd≥ 5.21.0, < 5.21.45.21.4
canonical/lxd≥ 6.0, < 6.76.7
References (6)
https://discourse.ubuntu.com/t/lxd-authenticated-remote-code-execution-fixes-available/78365 · [email protected]https://github.com/canonical/lxd/commit/043696a13171ace7dd4c2b32d34ce039ab629052 · [email protected]https://github.com/canonical/lxd/commit/7046979645c2ce1b63b2f9e60ddf6cbc4c4b78f9 · [email protected]https://github.com/canonical/lxd/commit/b7b411caf5c4971bfe2386c72128f44d7e2aaf4f · [email protected]https://github.com/canonical/lxd/security/advisories/GHSA-4rmf-rcp8-2r9g · [email protected]https://github.com/canonical/lxd/security/advisories/GHSA-4rmf-rcp8-2r9g · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 12 MAR 14:51Z
    Authenticated RCE via unsanitized compression_algorithm
    cvelistv5