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CVE-2026-41568— Moby: Race condition in docker cp allows creation of arbitrary empty files on the host via symlink swap

Quick assessment

Affected
moby moby
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

moby是Moby团队的一个容器引擎。 moby存在安全漏洞，该漏洞源于docker cp挂载设置时的竞争条件问题，可能导致恶意容器在主机文件系统的任意绝对路径上创建空文件或空目录。

CVSS 6.1 · Medium EPSS 0.10% · P1

Possible ATT&CK Techniques 1 AI

T1610 · Deploy Container

Affected Version Matrix 3

VendorProduct Version RangeStatus
moby moby github.com/docker/docker/daemon <= 28.5.2 affected
Docker Engine < 29.5.1 affected
github.com/moby/moby/v2/daemon < 2.0.0-beta.14 affected
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I. Basic Information for CVE-2026-41568

Vulnerability Information
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Vulnerability Title
Moby: Race condition in docker cp allows creation of arbitrary empty files on the host via symlink swap
Source: CVE Program / CVE List V5
Vulnerability Description
Moby is an open source container framework. In Docker Engine prior to version 29.5.1, Docker Daemon versions 28.5.2 and prior, and Moby Daemon prior to version 2.0.0-beta.14, a race condition during docker cp mount setup allows a malicious container to create empty files or directories at arbitrary absolute paths on the host filesystem. This issue has been patched in Docker Engine version 29.5.1 and Moby Daemon version 2.0.0-beta.14.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:N/I:L/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
错误消息Web页面中脚本转义处理不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
moby 竞争条件问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
moby是Moby团队的一个容器引擎。 moby存在安全漏洞，该漏洞源于docker cp挂载设置时的竞争条件问题，可能导致恶意容器在主机文件系统的任意绝对路径上创建空文件或空目录。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
moby moby github.com/docker/docker/daemon <= 28.5.2 -

II. Public POCs for CVE-2026-41568

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III. Intelligence Information for CVE-2026-41568

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Vendor Advisories for CVE-2026-41568 (1)

IV. Related Vulnerabilities

Same product: moby
Same vendor: moby
Same weakness: CWE-81

V. Comments for CVE-2026-41568

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