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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.

PUBLISHED Reserved 2026-04-26 | Published 2026-06-12 | Updated 2026-06-13 | Assigner GitHub_M




HIGH: 7.2CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:N/I:H/A:H

Problem types

CWE-61: UNIX Symbolic Link (Symlink) Following

CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition

Product status

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

References

github.com/moby/moby/security/advisories/GHSA-rg2x-37c3-w2rh

cve.org (CVE-2026-42306)

nvd.nist.gov (CVE-2026-42306)

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