CVE-2026-42306

Moby: Race condition in docker cp allows bind mount redirection to host path

Published Jun 12, 2026 CVSS 3.1 · 7.2 High EPSS < 1% KEV · Not listed
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 redirect a bind mount target to an arbitrary host path, potentially overwriting host files or causing denial of service. This issue has been patched in Docker Engine version 29.5.1 and Moby Daemon version 2.0.0-beta.14.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DSA Debian DSA DSA-6443-1 docker.io security update
Github GHSA Github GHSA GHSA-rg2x-37c3-w2rh Docker: Race condition in docker cp allows bind mount redirection to host path
History
Type Values Removed Values Added
First Time appeared Docker
Docker engine
Mobyproject
Mobyproject moby
Mobyproject moby\/v2
CPEs cpe:2.3:a:docker:engine:*:*:*:*:*:*:*:*
cpe:2.3:a:mobyproject:moby:*:*:*:*:*:*:*:*
cpe:2.3:a:mobyproject:moby\/v2:2.0.0:beta0:*:*:*:*:*:*
cpe:2.3:a:mobyproject:moby\/v2:2.0.0:beta10:*:*:*:*:*:*
cpe:2.3:a:mobyproject:moby\/v2:2.0.0:beta11:*:*:*:*:*:*
cpe:2.3:a:mobyproject:moby\/v2:2.0.0:beta12:*:*:*:*:*:*
cpe:2.3:a:mobyproject:moby\/v2:2.0.0:beta13:*:*:*:*:*:*
cpe:2.3:a:mobyproject:moby\/v2:2.0.0:beta1:*:*:*:*:*:*
cpe:2.3:a:mobyproject:moby\/v2:2.0.0:beta2:*:*:*:*:*:*
cpe:2.3:a:mobyproject:moby\/v2:2.0.0:beta3:*:*:*:*:*:*
cpe:2.3:a:mobyproject:moby\/v2:2.0.0:beta4:*:*:*:*:*:*
cpe:2.3:a:mobyproject:moby\/v2:2.0.0:beta5:*:*:*:*:*:*
cpe:2.3:a:mobyproject:moby\/v2:2.0.0:beta6:*:*:*:*:*:*
cpe:2.3:a:mobyproject:moby\/v2:2.0.0:beta7:*:*:*:*:*:*
cpe:2.3:a:mobyproject:moby\/v2:2.0.0:beta8:*:*:*:*:*:*
cpe:2.3:a:mobyproject:moby\/v2:2.0.0:beta9:*:*:*:*:*:*
Vendors & Products Docker
Docker engine
Mobyproject
Mobyproject moby
Mobyproject moby\/v2
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Moby
Moby moby
Vendors & Products Moby
Moby moby
Type Values Removed Values Added
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 redirect a bind mount target to an arbitrary host path, potentially overwriting host files or causing denial of service. This issue has been patched in Docker Engine version 29.5.1 and Moby Daemon version 2.0.0-beta.14.
Title Moby: Race condition in docker cp allows bind mount redirection to host path
Weaknesses CWE-367
CWE-61
References
Metrics cvssV3_1

{'score': 7.2, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:N/I:H/A:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Jun 13, 2026, 3:25 AM
Reserved
Apr 26, 2026, 12:37 PM
Status
Analyzed
Published
Jun 12, 2026, 7:16 PM
Modified
Jun 17, 2026, 10:47 AM