Vulnerability record · CVE-2026-45808 · published 7 August 2026

CVE-2026-45808: Incorrect authorization vulnerability

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.

7.1 CVSS 4.0 High EPSS 0.43% · top 65.5% CWE-863 · Incorrect authorization Deferred

7.1CVSS 4.0 base score

0.43%EPSS exploitation probability, 30 days

NoNot in CISA KEV

0Affected product versions listed by NVD

4References

9 Sep 2026Last modified by NVD

Description

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

Link	Tags
https://github.com/openbao/openbao/commit/c0495646b41cea0e3f5a1030132e9cf5c2375b5c
https://github.com/openbao/openbao/pull/3152
https://github.com/openbao/openbao/releases/tag/v2.5.4
https://github.com/openbao/openbao/security/advisories/GHSA-v8v8-cm84-m686

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Source: NIST National Vulnerability Database (record CVE-2026-45808), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.