7.1

CVE-2026-45808: openbao Incorrect Authorization

CVSS: 7.1v4.0HighDeferred
AliasesGHSA-v8v8-cm84-m686BIT-openbao-2026-45808GO-2026-5657
Published 07-08-2026Last modified 13-08-2026
Open JSON

Vulnerability summary

CVE-2026-45808 is a high (CVSS 7.1) Incorrect Authorization vulnerability in openbao. EPSS estimates a 0.43% chance of exploitation in the next 30 days, higher than 35.9% of scored vulnerabilities.

Overall risk
28/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.1/10
010
High · v4.0 (CVE.org)
EPSS score
0.43%
0%100%
Low · +0.12 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 2 · Related 2
OPENSUSE-SU-2026:10835-1OPENSUSE-SU-2026:21483-1

Timeline

  1. 07-08-2026
    PublishedVulnerability first disclosed.
  2. 13-08-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.43%

Chance of exploitation in the next 30 days

Percentile

36%

Versus all other CVEs

30-day change

+0.12 pp

From 0.31% on 22-09-2026

22-09-202622-10-2026
EPSS score
0.43%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Github.com/openbao1 product
  • openbao< 2.5.4 | All versions (No fix recorded)
Openbao1 product

2 vendors · 2 products

References

5 links