CVE-2026-42306: Docker Engine

High severity, CVSS 7.2. EPSS: 0.1% chance of exploitation in the next 30 days.

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.

Affected products

• Docker Engine: before 29.5.1 (fixed in 29.5.1)
• Mobyproject Moby: up to and including 28.5.2
• Mobyproject moby/v2: version 2.0.0 only

Published 2026-06-12. Last modified 2026-06-17.