---
id: CVE-2026-115363
title: >-
  OpenBao 2.2.0 before 2.6.4 and 2.7.0 before 2.7.1 ACME EAB MAC Key Disclosure
  via Sanitized Configuration
summary: >-
  OpenBao 2.2.0 before 2.6.4 and 2.7.0 before 2.7.1 contains an information
  disclosure vulnerability that exposes the tls_acme_eab_mac_key value through
  the sys/config/state/sanitized endpoint. Callers of the sanitized
  configuration endpoi…
severity: low
cvss: 3.3
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:N'
cvssSource: cna
cwe:
  - CWE-212
vendor: openbao
product: openbao
affected:
  - openbao >= 2.2.0 < 2.6.4
  - openbao >= 2.7.0 < 2.7.1
published: '2026-10-22'
updated: '2026-10-22'
sourceUpdated: '2026-10-22T19:13:37.600Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-115363'
references:
  - url: 'https://github.com/openbao/openbao/security/advisories/GHSA-3237-j65r-m5rp'
    label: GitHub Security Advisory (GHSA-3237-j65r-m5rp)
  - url: >-
      https://www.vulncheck.com/advisories/openbao-2.2.0-before-2.6.4-and-2.7.0-before-2.7.1-acme-eab-mac-key-disclosure-via-sanitized-configuration
    label: >-
      VulnCheck Advisory: OpenBao 2.2.0 before 2.6.4 and 2.7.0 before 2.7.1 ACME
      EAB MAC Key Disclosure via Sanitized Configuration
tags:
  - cve.org
ingestedAt: '2026-10-22T22:00:50.399Z'
---

## Overview

OpenBao 2.2.0 before 2.6.4 and 2.7.0 before 2.7.1 contains an information disclosure vulnerability that exposes the tls_acme_eab_mac_key value through the sys/config/state/sanitized endpoint. Callers of the sanitized configuration endpoint can retrieve the ACME External Account Binding MAC key used for TLS listener certificates, letting them bind to the operator's ACME account.

## Affected

- `openbao >= 2.2.0 < 2.6.4`
- `openbao >= 2.7.0 < 2.7.1`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.