CVE-2026-86334CLI Path Traversal via Content-Disposition in LXD Image Export/Copy
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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.
- CVSS
- 4.2 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:L
- Weakness (CWE)
- CWE-22
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- canonical
- NVD analysis
- Deferred
- Record last updated
- Sep 28, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Canonical LXD canonical:lxd (from the name) | from 4.0.2 before 4.0.14; from 5.0.0 before 5.0.10; from 5.21.0 before 5.21.8; from 6.0 before 6.10 | CNA record |
References
- https://github.com/canonical/lxd/security/advisories/GHSA-g4cm-f533-78hqvendor-advisory, issue-tracking
- https://github.com/canonical/lxd/pull/18977patch
- https://github.com/canonical/lxd/pull/18976patch
- https://github.com/canonical/lxd/pull/18974patch
- https://github.com/canonical/lxd/pull/18975patch
- https://github.com/canonical/lxd/pull/18940patch
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.