CVE-2026-86334
CLI Path Traversal via Content-Disposition in LXD Image Export/Copy
CVSS Score
4.2
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-22 |
| Vendor | canonical |
| Product | lxd |
| Ecosystems | |
| Industries | Technology |
| Published | Sep 28, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:L Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
Low
Affected Versions
Canonical / LXD
4.0.2 < 4.0.14 5.0.0 < 5.0.10 5.21.0 < 5.21.8 6.0 < 6.10
References
github.com: https://github.com/canonical/lxd/security/advisories/GHSA-g4cm-f533-78hq github.com: https://github.com/canonical/lxd/pull/18977 github.com: https://github.com/canonical/lxd/pull/18976 github.com: https://github.com/canonical/lxd/pull/18974 github.com: https://github.com/canonical/lxd/pull/18975 github.com: https://github.com/canonical/lxd/pull/18940