OpenBao is an open source identity-based secrets management system. Prior to version 2.5.4, OpenBao's namespaces provide multi-tenant separation. A tenant who intentionally leaks lease identifiers can have their lease and underlying credential revoked or renewed by a user in another tenant via the legacy, undocumented `sys/revoke` and `sys/renew` endpoints. This is fixed in OpenBao v2.5.4.
Advisories
Source ID Title
Github GHSA Github GHSA GHSA-v8v8-cm84-m686 OpenBao's cross-namespace lease revocation via legacy sys/revoke path bypasses ACL
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Thu, 13 Aug 2026 19:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 07 Aug 2026 22:45:00 +0000

Type Values Removed Values Added
First Time appeared Openbao
Openbao openbao
Vendors & Products Openbao
Openbao openbao

Fri, 07 Aug 2026 21:30:00 +0000

Type Values Removed Values Added
Description OpenBao is an open source identity-based secrets management system. Prior to version 2.5.4, OpenBao's namespaces provide multi-tenant separation. A tenant who intentionally leaks lease identifiers can have their lease and underlying credential revoked or renewed by a user in another tenant via the legacy, undocumented `sys/revoke` and `sys/renew` endpoints. This is fixed in OpenBao v2.5.4.
Title OpenBao's cross-namespace lease revocation via legacy sys/revoke path bypasses ACL
Weaknesses CWE-863
References
Metrics cvssV4_0

{'score': 7.1, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-08-13T18:42:47.586Z

Reserved: 2026-05-13T08:19:32.604Z

Link: CVE-2026-45808

cve-icon Vulnrichment

Updated: 2026-08-13T18:42:41.902Z

cve-icon NVD

Status : Received

Published: 2026-08-07T22:16:58.370

Modified: 2026-08-13T19:17:20.823

Link: CVE-2026-45808

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-07T23:00:04Z

Weaknesses