Cross-Namespace Authorization Bypass in HashiCorp Nomad and Nomad Enterprise
CVE-2026-102260

4.3MEDIUM

Key Information:

Vendor

Hashicorp
Status
Nomad
Nomad Enterprise
Vendor
CVE Published:
29 October 2026

What is CVE-2026-102260?

HashiCorp Nomad and Nomad Enterprise exhibit a vulnerability that allows an authenticated user with read access in one namespace to unintentionally access data residing in other namespaces through various read-only API endpoints. This can lead to unauthorized information disclosure, which potentially compromises the integrity and confidentiality of the stored data. Users are encouraged to upgrade to the patched versions to mitigate this risk.

Affected Version(s)

Nomad 64 bit 0.11.0 < 2.1.0

Nomad Enterprise 64 bit 0.11.0 < 2.1.0

References

https://discuss.hashicorp.com/t/hcsec-2026-51-nomad-vulne...

CVSS V3.1

Score:
4.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

This issue was reported to HashiCorp by Wenhao Wu (Southeast University).
.