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`) from the container's filesystem rather than the host's due to incorrect ordering of operations. A malicious container image containing a trojanized decompression binary can achieve arbitrary code execution with full daemon privileges, including host root UID and unrestricted capabilities, when a user uploads a compressed (xz or gzip) archive into that container. This issue is fixed in Docker Engine 29.5.1 and moby/moby v2.0.0-beta.14. Workarounds include only running containers from trusted images, using authorization plugins to restrict access to the `PUT /containers/{id}/archive` endpoint, and avoiding piping compressed archives into containers created from untrusted images
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade docker | Jun 8, 2026 | Jun 5, 2026 |
| Amazon Linux Ami 2 | — | Upgrade docker-debuginfoUpgrade docker | Jul 8, 2026 | Jul 8, 2026 |
| Amazon_linux_2023 | — | Upgrade docker-debugsourceUpgrade dockerUpgrade docker-debuginfo | Jul 8, 2026 | Jun 5, 2026 |
| Debian | — | Upgrade docker.io | Aug 17, 2026 | Aug 17, 2026 |
| Redhat_linux | — | No solution exists | Jul 17, 2026 | Jun 5, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jul 6, 2026 | Jun 5, 2026 |
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