Understanding and Defending Against Argument Injection in Incus
This educational analysis covers CVE-2026-62867, a critical vulnerability in Incus, a system container and virtual machine manager. The vulnerability, with a CVSS score of 9.9, allows project-scoped users to inject arbitrary arguments into commands executed as root, leading to potential system compromise. We will delve into the root cause, attack surface, exploitation mechanics, and provide defensive strategies.