CVE-2021-41865

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-10-07 · updated 2026-06-17

Description

HashiCorp Nomad and Nomad Enterprise 1.1.1 through 1.1.5 allowed authenticated users with job submission capabilities to cause denial of service by submitting incomplete job specifications with a Consul mesh gateway and host networking mode. Fixed in 1.1.6.

Affected products

HashiCorp Nomad Enterprise: from 1.1.1 before 1.1.6 — fixed in 1.1.6

How to fix

Upgrade to a fixed version: HashiCorp Nomad Enterprise 1.1.6. Check the vendor advisory for mitigations.

References

https://discuss.hashicorp.com/t/hcsec-2021-26-nomad-denial-of-service-via-submission-of-incomplete-job-specification-using-consul-mesh-gateway-host-network/30311
https://discuss.hashicorp.com/t/hcsec-2021-26-nomad-denial-of-service-via-submission-of-incomplete-job-specification-using-consul-mesh-gateway-host-network/30311

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