CVE-2026-45808 Details
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.
A vulnerability in OpenBao's identity-based secrets management system allows for cross-tenant lease revocation and renewal through legacy, undocumented endpoints. This issue affects OpenBao versions prior to 2.5.4. The vulnerability arises from insufficient separation between multi-tenant namespaces, enabling a tenant to manipulate lease identifiers and credentials of another tenant.
Users can upgrade to OpenBao version 2.5.4 or later to address this vulnerability.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Aug 7, 2026CISA-ADP
Assessed Aug 13, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/openbao/openbao/commit/c0495646b41cea0e3f5a1030132e9cf5c2375b5c | [email protected] | Source CodeVendor |
| https://github.com/openbao/openbao/pull/3152 | [email protected] | Issue TrackingSource CodeVendor |
| https://github.com/openbao/openbao/releases/tag/v2.5.4 | [email protected] | Release NotesVendor |
| https://github.com/openbao/openbao/security/advisories/GHSA-v8v8-cm84-m686 | [email protected] | AdvisoryRemedyVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-863 | Incorrect Authorization | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| OpenBao | <= 2.5.3 (semver) |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Aug 13, 2026 | CVE Modified | CISA-ADP |
| Aug 7, 2026 | New CVE Received | [email protected] |
Volerion