CVE-2023-1782: Nomad Unauthenticated Client Agent HTTP Request Privilege Escalation

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-04-05 · updated 2026-06-17
Weakness: CWE-862

Description

HashiCorp Nomad and Nomad Enterprise versions 1.5.0 up to 1.5.2 allow unauthenticated users to bypass intended ACL authorizations for clusters where mTLS is not enabled. This issue is fixed in version 1.5.3.

Affected products

HashiCorp Nomad Enterprise: from 1.5.0 through 1.5.2

References

https://discuss.hashicorp.com/t/hcsec-2023-12-nomad-unauthenticated-client-agent-http-request-privilege-escalation/52375
https://discuss.hashicorp.com/t/hcsec-2023-12-nomad-unauthenticated-client-agent-http-request-privilege-escalation/52375

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