Incus

A critical vulnerability, CVE-2026-48751, in Incus versions prior to 7.2.0, allows an attacker to bypass restricted project settings via malicious instance snapshots, enabling arbitrary command execution with root privileges on the Incus server by abusing low-level hooks.

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 critical arbitrary file write vulnerability (CVE-2026-48769) exists in the Incus client daemon (`incusd`) when processing images from a malicious server, allowing an attacker to inject path traversal into the `Incus-Image-Hash` header to create arbitrary files in sensitive locations as root, ultimately leading to arbitrary command execution.

A vulnerability exists in Incus where it does not properly verify the combined fingerprint when downloading images from simplestreams servers, allowing an attacker to perform image cache poisoning and potentially expose other tenants to running attacker-controlled images.

A vulnerability in Incus versions prior to 6.23.0 allows for arbitrary read and write access as root on the host server by exploiting a missing chroot isolation in the pongo2 template engine.

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.