High severity · published Jun 12, 2026
CVE-2026-42306
Moby: Race condition in docker cp allows bind mount redirection to host path
7.2
CVSS
0.1%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:N/I:H/A:H
Attack vector
Local
Complexity
High
Privileges
Low
User interaction
Required
Confidentiality
None
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 1% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MO
moby · moby
github.com/docker/docker/daemon <= 28.5.2; Docker Engine < 29.5.1; github.com/moby/moby/v2/daemon < 2.0.0-beta.14 · source: vendor, NVD
EN
Engine · Docker
before 29.5.1 · source: NVD
MO
Moby/v2 · Mobyproject
2.0.0; 2.0.0; 2.0.0; 2.0.0; 2.0.0; 2.0.0; +8 more · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-42306
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-42306
Mitigation
https://github.com/moby/moby/security/advisories/GHSA-rg2x-37c3-w2rh
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