Vulnerability Description
A path traversal vulnerability in LXD allows an attacker to achieve arbitrary host file read or unconstrained file creation. When processing image metadata templates, LXD fails to properly sanitize or restrict template file paths from escaping the instance templates directory (specifically affecting virtual machine / QEMU driver execution paths). An attacker can exploit this flaw by providing a crafted image archive with malicious template directives containing path traversal sequences, causing LXD to access or write files outside the intended template directory on the host system.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Canonical | Lxd | >= 4.0.0, < 4.0.12 |
Related Weaknesses (CWE)
References
- https://github.com/canonical/lxd/security/advisories/GHSA-9hcm-hxh5-7xxhVendor AdvisoryExploit
- https://github.com/canonical/lxd/security/advisories/GHSA-9hcm-hxh5-7xxhVendor AdvisoryExploit
FAQ
What is CVE-2026-16033?
CVE-2026-16033 is a vulnerability with a CVSS score of 8.5 (HIGH). A path traversal vulnerability in LXD allows an attacker to achieve arbitrary host file read or unconstrained file creation. When processing image metadata templates, LXD fails to properly sanitize or...
How severe is CVE-2026-16033?
CVE-2026-16033 has been rated HIGH with a CVSS base score of 8.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-16033?
Check the references section above for vendor advisories and patch information. Affected products include: Canonical Lxd.