CVE-2026-63293Escape de contenedor y escritura de archivos en LXD
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.
Ver en NVDAnálisis
A critical vulnerability in LXD allows a malicious container image to read and write arbitrary files on the host system. This is a severe sandbox escape that can lead to full host compromise when importing or unpacking untrusted images.
Roles relevantes
Severidad
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:HCWE-59EPSS
Sin puntaje EPSS aún (CVE muy reciente).
Descripción técnica
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.