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Vulnerability record · CVE-2026-28384 · published 12 March 2026

CVE-2026-28384: Canonical lxd os command injection vulnerability

Canonical · Lxd

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.

9.4 CVSS 4.0 Critical EPSS 0.86% · top 43.1% CWE-78 · OS command injection
9.4CVSS 4.0 base score
0.86%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References, 3 tagged exploit
18 Sep 2026Last modified by NVD

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.

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://discourse.ubuntu.com/t/lxd-authenticated-remote-code-execution-fixes-available/78365 Issue TrackingExploitVendor Advisory
https://github.com/canonical/lxd/commit/043696a13171ace7dd4c2b32d34ce039ab629052 Patch
https://github.com/canonical/lxd/commit/7046979645c2ce1b63b2f9e60ddf6cbc4c4b78f9 Patch
https://github.com/canonical/lxd/commit/b7b411caf5c4971bfe2386c72128f44d7e2aaf4f Patch
https://github.com/canonical/lxd/security/advisories/GHSA-4rmf-rcp8-2r9g Vendor AdvisoryExploit
https://github.com/canonical/lxd/security/advisories/GHSA-4rmf-rcp8-2r9g Vendor AdvisoryExploit

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.9CVE-2026-66897Canonical lxd path traversal vulnerabilityA path traversal vulnerability in LXD's instance template processing allows an attacker with container edit permissions, or any user launching a craf…EPSS 0.72%9.9CVE-2026-66898Canonical lxd path traversal vulnerabilityA path traversal vulnerability in LXD allows an attacker to manipulate file system paths during backup import and restore operations. When importing …EPSS 0.59%9.9CVE-2026-63293Canonical lxd link following vulnerabilityA link following vulnerability in LXD allows an attacker to achieve arbitrary file read and write operations on the host system. When importing or un…EPSS 0.59%9.9CVE-2026-63294Canonical lxd link following vulnerabilityA link following vulnerability in LXD allows an attacker to achieve root command execution on the host system. During the import or unpacking of craf…EPSS 0.88%9.9CVE-2026-63296Canonical lxd incorrect authorization vulnerabilityAn authorization bypass vulnerability in LXD allows an authenticated attacker to bypass target project restrictions during instance migration. When m…EPSS 0.44%9.9CVE-2026-63297Canonical lxd toctou race condition vulnerabilityAn authorization bypass vulnerability in LXD due to a timing flaw during configuration merging allows an authenticated attacker to bypass target proj…EPSS 0.34%9.9CVE-2026-63298Canonical lxd os command injection vulnerabilityAn improper neutralization of special elements vulnerability in LXD's NVIDIA instance configuration handling allows an authenticated attacker to inje…EPSS 0.69%9.9CVE-2026-63299Canonical lxd allocation without limits vulnerabilityAn authorization bypass vulnerability in LXD allows an authenticated user to bypass project-level disk and volume limits. Two related code paths fail…EPSS 0.59%

Source: NIST National Vulnerability Database (record CVE-2026-28384), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.