CVE-2026-45808

HIGH

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

Title source: cna
STIX 2.1

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.

References (4)

Core 4

Scores

CVSS v4 7.1
EPSS 0.0031
EPSS Percentile 23.2%
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:X/V:X/RE:X/U:X

Details

CWE
CWE-863
Status published
Products (1)
openbao/openbao < 2.5.4
Published Aug 07, 2026
Tracked Since Aug 08, 2026