CVE-2026-17106Tar extraction in moby/go-archive can write outside the destination directory via link following
Updated under an hour ago ()
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It affects moby go-archive and 5 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 7.1 HIGH (v4.0, CNA)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
- Weakness (CWE)
- CWE-59
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Docker
- NVD analysis
- Awaiting Analysis
- Record last updated
- Aug 19, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
moby go-archive moby:go_archive (from the name) | before 0.3.0 | CNA record |
Docker Docker Sandboxes docker:docker_sandboxes | before 0.38.0 | CNA record |
Docker Docker Desktop docker:desktop | before 4.86.0 | CNA record |
Docker Docker Engine docker:engine (from the name) | before 29.7.0 | CNA record |
Docker Docker CLI docker:cli (from the name) | before 29.7.0 | CNA record |
Docker Docker Compose docker:compose (from the name) | before 5.4.0 | CNA record |
References
- https://github.com/moby/go-archive/security/advisories/GHSA-hfg8-hc9c-6c3hvendor-advisory
- https://docs.docker.com/desktop/release-notes/#4860release-notes
- https://github.com/docker/sbx-releases/releases/tag/v0.38.0release-notes
- https://docs.docker.com/engine/release-notes/29/#2970release-notes
- https://github.com/docker/cli/releases/tag/v29.7.0release-notes
- https://github.com/docker/compose/releases/tag/v5.4.0release-notes
- https://github.com/moby/go-archive/releases/tag/v0.3.0patch
- https://github.com/masasron/CopyEscape-CVE-2026-17106
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.