Advisoriesby IbisDockerCVE-2026-17106
Docker CLI: link following
Fix: upgrade to go-archive 0.3.0 or later (5 fixed versions below)
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.
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| Docker CLI Product | < 29.7.0 | 29.7.0 |
| Docker Compose Product | < 5.4.0 | 5.4.0 |
| Docker Desktop Product | < 4.86.0 | 4.86.0 |
| Docker Engine Product | < 29.7.0 | 29.7.0 |
| Docker Sandboxes Product | < 0.38.0 | 0.38.0 |
| go-archive Product | < 0.3.0 | 0.3.0 |
Details and references
- CVSS 4.0
- CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- Severity from
- the vendor (its own CVE record or advisory)
- Weakness
- CWE-59
- www.cve.org/CVERecord?id=CVE-2026-17106
- nvd.nist.gov/vuln/detail/CVE-2026-17106
- docs.docker.com/desktop/release-notes/#4860
- docs.docker.com/engine/release-notes/29/#2970
- github.com/docker/cli/releases/tag/v29.7.0
- github.com/docker/compose/releases/tag/v5.4.0
- github.com/docker/sbx-releases/releases/tag/v0.38.0
- github.com/moby/go-archive/releases/tag/v0.3.0
- github.com/moby/go-archive/security/advisories/GHSA-hfg8-hc9c-6c3h
- github.com/masasron/CopyEscape-CVE-2026-17106