CVE-2026-17106
Tar extraction in moby/go-archive can write outside the destination directory via link following
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.
INFO
Published Date :
Aug. 18, 2026, 7:16 p.m.
Last Modified :
Aug. 18, 2026, 7:16 p.m.
Remotely Exploit :
No
Source :
[email protected]
Affected Products
The following products are affected by CVE-2026-17106
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 4.0 | HIGH | 686469e6-3ff6-451b-ab8b-cf5b9e89401e | ||||
| CVSS 4.0 | HIGH | [email protected] |
Solution
- Validate archive entry paths against the destination directory.
- Sanitize or reject archive entries that escape the target directory.
- Update to a version with improved path traversal defenses.
- Restrict archive contents by authorized sources.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-17106.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-17106 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-17106
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-17106 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-17106 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by [email protected]
Aug. 18, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'moby', 'product': 'go-archive', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '0.3.0', 'versionType': 'semver'}], 'packageName': 'github.com/moby/go-archive', 'defaultStatus': 'unaffected'}, {'cpes': ['cpe:2.3:a:docker:docker_sandboxes:*:*:*:*:*:*:*:*'], 'vendor': 'Docker', 'product': 'Docker Sandboxes', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '0.38.0', 'versionType': 'semver'}], 'platforms': ['MacOS', 'Linux', 'Windows'], 'defaultStatus': 'unaffected'}, {'cpes': ['cpe:2.3:a:docker:desktop:*:*:*:*:*:*:*:*'], 'vendor': 'Docker', 'product': 'Docker Desktop', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '4.86.0', 'versionType': 'semver'}], 'platforms': ['MacOS', 'Linux', 'Windows'], 'defaultStatus': 'unaffected'}, {'vendor': 'Docker', 'product': 'Docker Engine', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '29.7.0', 'versionType': 'semver'}], 'platforms': ['MacOS', 'Linux', 'Windows'], 'defaultStatus': 'unaffected'}, {'vendor': 'Docker', 'product': 'Docker CLI', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '29.7.0', 'versionType': 'semver'}], 'platforms': ['MacOS', 'Linux', 'Windows'], 'defaultStatus': 'unaffected'}, {'vendor': 'Docker', 'product': 'Docker Compose', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '5.4.0', 'versionType': 'semver'}], 'platforms': ['MacOS', 'Linux', 'Windows'], 'defaultStatus': 'unaffected'}] Added 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. Added CVSS V4.0 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 Added CWE CWE-59 Added Reference https://docs.docker.com/desktop/release-notes/#4860 Added Reference https://docs.docker.com/engine/release-notes/29/#2970 Added Reference https://github.com/docker/cli/releases/tag/v29.7.0 Added Reference https://github.com/docker/compose/releases/tag/v5.4.0 Added Reference https://github.com/docker/sbx-releases/releases/tag/v0.38.0 Added Reference https://github.com/moby/go-archive/releases/tag/v0.3.0 Added Reference https://github.com/moby/go-archive/security/advisories/GHSA-hfg8-hc9c-6c3h -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Aug. 18, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-17106', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'poc'}, {'automatable': 'no'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-08-18T18:50:49.774785Z'}