CVE-2026-14373 Nomad Docker driver Linux host namespace bypass
Authenticated users can bypass privileged restrictions to access host namespaces and sensitive data in Nomad Docker tasks.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-14373?
CVE-2026-14373 is a high-severity missing authorization vulnerability in HashiCorp Nomad, published on 8 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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.
Weakness: CWE-862
Which versions are affected by CVE-2026-14373?
How do I fix CVE-2026-14373?
No fix has been published for CVE-2026-14373 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-14373 being exploited?
There is no known exploitation of CVE-2026-14373 in the wild and no public exploit code.
Sources
Also known as GHSA-2cc5-jjc3-x9fw, UBUNTU-CVE-2026-14373.