CVE-2026-86334

Medium

Description

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.

SeverityMedium

CVSS4.2

Exploit probability—

ProductLXD

PublishedSep 28, 2026

First seenSep 28, 2026

Weakness typeCWE-22Path traversal

How to fix

Update

Canonical LXD4.0.14, 5.0.10, 5.21.8, 6.10 or later

Patches

Vendor advisories

github.com/canonical/lxd/security/advisories/GHSA-g4cm-f533-78hq

Affected products

Product	Affected versions	Fixed in
Canonical LXD	4.0.2 ≤ v < 4.0.14, 5.0.0 ≤ v < 5.0.10, 5.21.0 ≤ v < 5.21.8, 6.0 ≤ v < 6.10	4.0.14, 5.0.10, 5.21.8, 6.10

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