Vulnerability Description
The tar extraction routines in moby/go-archive (Unpack, UnpackLayer, Untar/UntarUncompressed, and the ApplyLayer helpers) do not confine filesystem operations to the destination directory. The extractor decides where each archive entry lands using lexical string checks and then performs the filesystem operation on a path that is resolved by the OS, so links introduced by the archive can be followed out of the destination directory. An attacker who controls the contents of an archive can create or overwrite files at arbitrary paths writable by the extracting process.
Related Weaknesses (CWE)
References
- https://docs.docker.com/desktop/release-notes/#4860
- https://docs.docker.com/engine/release-notes/29/#2970
- https://github.com/docker/cli/releases/tag/v29.7.0
- https://github.com/docker/compose/releases/tag/v5.4.0
- https://github.com/docker/sbx-releases/releases/tag/v0.38.0
- https://github.com/moby/go-archive/releases/tag/v0.3.0
- https://github.com/moby/go-archive/security/advisories/GHSA-hfg8-hc9c-6c3h
- https://github.com/masasron/CopyEscape-CVE-2026-17106
FAQ
What is CVE-2026-17106?
CVE-2026-17106 is a documented vulnerability. The tar extraction routines in moby/go-archive (Unpack, UnpackLayer, Untar/UntarUncompressed, and the ApplyLayer helpers) do not confine filesystem operations to the destination directory. The extract...
How severe is CVE-2026-17106?
CVSS scoring is not yet available for CVE-2026-17106. Check NVD for updates.
Is there a patch for CVE-2026-17106?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.