Critical severity · published Aug 12, 2026
CVE-2026-63293
Arbitrary File Read/Write: metadata.yaml symlink in image allows host filesystem access as root
9.9
CVSS
0.6%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 48% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
LX
LXD · Canonical
4.0.0 before 4.0.12; 5.0.0 before 5.0.8; 5.21.0 before 5.21.6; 6.0 before 6.10 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-63293
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-63293
Vendor Advisory
https://github.com/canonical/lxd/security/advisories/GHSA-j825-cg34-5fr5
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