CVE-2026-63293
CriticalCVSS 9.9Summary
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.
Risk Assessment
The risk for the organization is full compromise of the host system, including the ability to modify critical system files and take control of the infrastructure.
Recommendation
It is recommended to immediately update LXD to a version that includes a fix for this vulnerability. Additionally, limit trust in unverified image archives.
Original NVD description (English source)
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.