CVE-2026-86334
MEDIUMCVSS 4.2Description
Path traversal in the CLI client image export and copy functionality in Canonical LXD from 4.0.2 before 4.0.14, 5.0.10, 5.21.8, and 6.10 on all platforms allows a remote malicious or machine-in-the-middle image server to overwrite arbitrary local files and execute code on the client system via a crafted Content-Disposition header filename parameter during unified image export or copy operations into a local directory target.
Timeline
Published:September 28th, 2026 2:17 PM
Last modified:September 28th, 2026 6:17 PM
CVSS Scoring
CVSS v3: 4.2 (MEDIUM)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:L
Weaknesses (CWE)
References & Reports
Advisories, patches, and third-party reports
- https://github.com/canonical/lxd/pull/18940
- https://github.com/canonical/lxd/pull/18974
- https://github.com/canonical/lxd/pull/18975
- https://github.com/canonical/lxd/pull/18976
- https://github.com/canonical/lxd/pull/18977
- https://github.com/canonical/lxd/security/advisories/GHSA-g4cm-f533-78hq
- https://github.com/canonical/lxd/security/advisories/GHSA-g4cm-f533-78hq
Source: NIST NVD · Data may lag official sources by up to one minute