CVE-2026-14373 PUBLISHED

Nomad Docker driver Linux host namespace bypass

Assigner: HashiCorp
Reserved: 01.07.2026 Published: 08.07.2026 Updated: 08.07.2026

HashiCorp Nomad and Nomad Enterprise did not enforce the allow_privileged restriction for the Docker task driver's host namespace mode options. This may allow an authenticated job submitter to run a container in a host namespace and access information belonging to the host or to other workloads on the same client. This vulnerability, CVE-2026-14373, is fixed in Nomad Community Edition 2.0.4 and Nomad Enterprise 2.0.4, 1.11.8, and 1.10.14.

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
CVSS Score: 7.7

Attack Vector	Network	Scope	Changed
Attack Complexity	Low	Confidentiality Impact	High
Privileges Required	Low	Integrity Impact	None
User Interaction	None	Availability Impact	None

CVSS 3.1

Product Status

Vendor	HashiCorp
Product	Nomad
Versions	Default: unaffected affected from 0.4.1 to 2.0.4 (excl.)

Vendor	HashiCorp
Product	Nomad Enterprise
Versions	Default: unaffected affected from 0.4.1 to 2.0.4 (excl.)

Credits

This issue was reported to HashiCorp by Deniz Onur Duzgun (@dduzgun-security).

References

https://discuss.hashicorp.com/t/hcsec-2026-19-nomad-docker-driver-vulnerable-to-host-namespace-bypass-on-linux/77557

Problem Types

CWE-862: Missing Authorization CWE

Impacts

CAPEC-1: Accessing Functionality Not Properly Constrained by ACLs