Vulnerability in Canonical Lxd
CVE-2026-63293
A link following vulnerability in LXD allows an attacker to achieve arbitrary file read and write operations on the host system. When importing or unpacking an image archive, LXD fails to validate whether the metadata.yaml file is a symbolic link. An attacker can exploit this flaw by providing a crafted image archive with a symlinked metadata.yaml file pointing to target file paths on the host system.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.9 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.006 (46.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 46th percentile — 46.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.006 · change: +0.002
Affected products
- Canonical Lxd — versions 4.0.0, 5.0.0, 5.21.0
Weakness classification (CWE)
References
- github.com/canonical/lxd/security/advisories/GHSA-j825-cg34-5fr5 (Exploit, vendor-advisory, vdb-entry, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-63293?
- CVE-2026-63293 is a critical-severity vulnerability in Canonical Lxd, classified under Improper Link Resolution Before File Access. CVSS score: 9.9/10. Published 2026-08-12.
- How severe is CVE-2026-63293?
- Critical severity. CVSS v3 base score is 9.9 out of 10.