What’s Vulnerable › Vulnerabilities

CVE-2021-37218

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-09-07 · updated 2026-06-17
• Weakness: CWE-295

Description

HashiCorp Nomad and Nomad Enterprise Raft RPC layer allows non-server agents with a valid certificate signed by the same CA to access server-only functionality, enabling privilege escalation. Fixed in 1.0.10 and 1.1.4.

Affected products

• HashiCorp Nomad Enterprise: before 1.0.10; through 1.0.10; from 1.1.1 before 1.1.4 — fixed in 1.0.10, 1.1.4

How to fix

Upgrade to a fixed version: HashiCorp Nomad Enterprise 1.0.10, 1.1.4. Check the vendor advisory for mitigations.

References

• https://discuss.hashicorp.com/t/hcsec-2021-21-nomad-raft-rpc-privilege-escalation/29023
• https://www.hashicorp.com/blog/category/nomad
• https://discuss.hashicorp.com/t/hcsec-2021-21-nomad-raft-rpc-privilege-escalation/29023
• https://www.hashicorp.com/blog/category/nomad

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