CVE-2026-28384

Critical

Published: 12/03/2026(UTC)Translated: 05/08/2026(UTC)NVD NIST

Summary

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 image and backup endpoints. This affects LXD from 4.12 through 6.6 and was fixed in snap versions 5.0.6-e49d9f4, 5.21.4-1374f39, and 6.7-1f11451. The 4.0/stable channel is not affected as it contains version 4.0.10.

Risk Assessment

The risk involves privilege escalation, where an unprivileged user can gain full control over the LXD daemon, potentially leading to compromise of data integrity and confidentiality in container environments.

Recommendation

It is recommended to immediately update LXD to a patched version as specified in the snap versions.

Original NVD description (English source)

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.