7.5

CVE-2026-42186: openbao

CVSS: 7.5v3.1HighAnalyzed
AliasesGHSA-vv66-6rp4-wr4fBIT-openbao-2026-42186GO-2026-5674
Published 14-05-2026Last modified 14-05-2026
Open JSON

Vulnerability summary

CVE-2026-42186 is a high (CVSS 7.5) vulnerability in openbao. EPSS estimates a 0.43% chance of exploitation in the next 30 days, higher than 36.5% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (NVD)
EPSS score
0.43%
0%100%
Low · +0.18 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

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

Timeline

  1. 14-05-2026
    PublishedVulnerability first disclosed.
  2. 14-05-2026
    Last modifiedVulnerability information updated.

Description

OpenBao is an open source identity-based secrets management system. Prior to 2.5.3, when OpenBao's initial namespace deletion fails, subsequent retries fail to properly remove all data before marking the namespace as deleted. This can affect any outstanding leases as well as potentially leaving unrelated storage entries around. This vulnerability is fixed in 2.5.3.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

0.43%

Chance of exploitation in the next 30 days

Percentile

37%

Versus all other CVEs

30-day change

+0.18 pp

From 0.25% 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< 0.0.0-20260420173541-6d2e0506e2b4
Openbao1 product

2 vendors · 2 products

References

5 links