LXD 4.0.2-6.10 Path Traversal via CLI Image Export/Copy (CVE-2026-86334)
CVE-2026-86334 Published on September 28, 2026
CLI Path Traversal via Content-Disposition in LXD Image Export/Copy
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.
Vulnerability Analysis
CVE-2026-86334 is exploitable with network access, requires user interaction. This vulnerability is consided to have a high level of attack complexity. Public availability of a proof of concept (POC) exploit exists for CVE-2026-86334. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality, with no impact on integrity and availability.
Weakness Type
What is a Directory traversal Vulnerability?
The software uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the software does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.
CVE-2026-86334 has been classified to as a Directory traversal vulnerability or weakness.
Products Associated with CVE-2026-86334
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Affected Versions
Canonical LXD:- Version 4.0.2 and below 4.0.14 is affected.
- Version 5.0.0 and below 5.0.10 is affected.
- Version 5.21.0 and below 5.21.8 is affected.
- Version 6.0 and below 6.10 is affected.