Vulnerabilities CVE-2026-45808

CVE-2026-45808

High

Open

TLP:CLEAR

OpenBao's cross-namespace lease revocation via legacy sys/revoke path bypasses ACL

NVD CVE.org

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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.

Details

CVSS Score: 7.1
EPSS Score ⓘ: 0.31%

23.3th percentile
CVSS 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
Confidence: 90%
Published: Aug 7, 2026
Last Modified: Aug 7, 2026

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