CVE-2026-17106
What it is
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.
At a glance
- Exploitability
- Can be exploited locally on the machine without logging in, but needs a user to act. High risk of data exposure, data tampering, service disruption.
- Exploit odds
- 0.4% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 0.4% in the next 30 days (EPSS).
- Severity: 7.1 HIGH (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 0.4% · EPSS, next 30 days
- Weakness
- CWE-59
- Record status
- Awaiting Analysis
Attack profile CVSS 4.0 · 7.1
- Attack vector
- Local
- Complexity
- Low
- Attack requirements
- Present
- Privileges needed
- None
- User interaction
- Active
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Raw vector
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
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2026-17106.md and follow it. Check whether this project is affected by CVE-2026-17106. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- 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
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