CVE-2026-42306 HIGH

CVE-2026-42306: Moby: Race condition in docker cp allows bind mount redirection to host path

Vendor Moby
Product moby
Weakness CWE-61
Published June 12, 2026
Last update June 13, 2026
View on NVD All CVEs

CVSS base score

7.2/10
Attack vector Local
Attack complexity High
Privileges required Low
User interaction Required
Confidentiality None
Integrity High

CVSS vector

CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:N/I:H/A:H

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

June 12, 2026 CVE published
June 13, 2026 Record updated