Vulnerability 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.
Related Weaknesses (CWE)
References
- https://discourse.ubuntu.com/t/lxd-authenticated-remote-code-execution-fixes-ava
- https://github.com/canonical/lxd/commit/043696a13171ace7dd4c2b32d34ce039ab629052
- https://github.com/canonical/lxd/commit/7046979645c2ce1b63b2f9e60ddf6cbc4c4b78f9
- https://github.com/canonical/lxd/commit/b7b411caf5c4971bfe2386c72128f44d7e2aaf4f
- https://github.com/canonical/lxd/security/advisories/GHSA-4rmf-rcp8-2r9g
- https://github.com/canonical/lxd/security/advisories/GHSA-4rmf-rcp8-2r9g
FAQ
What is CVE-2026-28384?
CVE-2026-28384 is a documented vulnerability. 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...
How severe is CVE-2026-28384?
CVSS scoring is not yet available for CVE-2026-28384. Check NVD for updates.
Is there a patch for CVE-2026-28384?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.