CVE-2026-41567 Docker: `PUT /containers/{id}/archive` executes container binary on the host

Moby is an open source container framework. In versions prior to 29.5.1 and in moby/moby v2 prior to v2.0.0-beta.14, when a compressed archive is uploaded to a container via PUT /containers/id/archive or piped through docker cp -, the daemon resolves decompression binaries such as xz or unpigz fr...

Docker: `PUT /containers/{id}/archive` executes container binary on the host

Summary When a user uploads a compressed archive into a container, a malicious image can execute arbitrary code with daemon host root privileges. Details When handling PUT /containers/id/archive requests with compressed archives, the daemon decompresses them using external system binaries. Due to...