CVE-2023-1296: Nomad ACLs Can Not Deny Access to Workload's Own Variables

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-03-14 · updated 2026-06-17
Weakness: CWE-682

Description

HashiCorp Nomad and Nomad Enterprise 1.4.0 up to 1.5.0 did not correctly enforce deny policies applied to a workload’s variables. Fixed in 1.4.6 and 1.5.1.

Affected products

HashiCorp Nomad Enterprise: from 1.4.0 before 1.4.6; 1.5.0 — fixed in 1.4.6

How to fix

Upgrade to a fixed version: HashiCorp Nomad Enterprise 1.4.6. Check the vendor advisory for mitigations.

References

https://discuss.hashicorp.com/t/hcsec-2023-09-nomad-acls-can-not-deny-access-to-workloads-own-variables/51390
https://discuss.hashicorp.com/t/hcsec-2023-09-nomad-acls-can-not-deny-access-to-workloads-own-variables/51390

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