Incus

A critical vulnerability, CVE-2026-48752, in Incus versions prior to 7.2.0 allows an unauthenticated attacker to achieve arbitrary file read and write on the host system via specially crafted container images or instance backups containing unsanitized symlinks, potentially leading to arbitrary command execution as root.

The Incus `incusd` daemon, specifically its S3 protocol multipart upload endpoint in versions prior to 7.1.0, is vulnerable to CVE-2026-48753, a critical path traversal flaw via the `uploadId` parameter, enabling unauthenticated attackers to write arbitrary files to any location on the host system, which can be leveraged for persistent arbitrary command execution.

A path traversal vulnerability in Incus versions prior to 6.23.0 (CVE-2026-33945) allows an attacker to write arbitrary files as root, leading to privilege escalation and denial of service by crafting a malicious systemd credential path.

Incus versions prior to 6.23.0 are vulnerable to an authentication bypass in the `incus webui` component, allowing local attackers to gain elevated privileges or remote attackers to access system resources by exploiting the incorrect validation of authentication tokens.