CRITICALCVE-2026-28384Published Modified CNA canonical
CVE-2026-28384: Authenticated RCE via unsanitized compression_algorithm
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.
Metrics
- CVSS v4.0
- 9.4
- Severity
- CRITICAL
- Fixed in
- 5.0.6
- Affected Products
- 1
Affected packages
- Canonical / lxd< 6.7 (from 6.0) · < 5.21.4 (from 5.21.0) · < 5.0.6 (from 5.0.0) · 4.12
CVSS Vector
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