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CVE-2026-115363— OpenBao 2.2.0 before 2.6.4 and 2.7.0 before 2.7.1 ACME EAB MAC Key Disclosure via Sanitized Configuration

Quick assessment

Affected
openbao openbao
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

OpenBao 2.2.0 至 2.6.4 之前的版本，以及 2.7.0 至 2.7.1 之前的版本，存在一个信息泄露漏洞。该漏洞通过 接口暴露了 值。调用该清理配置接口的攻击者能够获取用于 TLS 监听器证书的 ACME 外部账户绑定（EAB）MAC 密钥，从而将其绑定到运营者的 ACME 账户。

CVSS 3.3 · Low

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 4

VendorProduct Version RangeStatus
openbao openbao 2.2.0< 2.6.4 affected
2.6.4 unaffected
2.7.0< 2.7.1 affected
2.7.1 unaffected
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I. Basic Information for CVE-2026-115363

Vulnerability Information
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Vulnerability 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
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
敏感数据的不恰当跨边界移除
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
openbao openbao 2.2.0 ~ 2.6.4 -

II. Public POCs for CVE-2026-115363

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III. Intelligence Information for CVE-2026-115363

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Vendor Advisories for CVE-2026-115363 (2)

Same Patch Batch · openbao · 2026-10-22 · 12 CVEs total

CVE-2026-115365 6.6 MEDIUM OpenBao 2.3.0 before 2.6.3 Incorrect Authorization via Policy Cache Namespace Traversal
CVE-2026-115356 5.4 MEDIUM OpenBao before 2.6.4 and 2.7.0 before 2.7.1 Kubernetes Auth Method Token Renewal After Rev
CVE-2026-115360 4.7 MEDIUM OpenBao before 2.6.3 Open Redirect via OIDC Identity Provider UI
CVE-2026-115361 4.1 MEDIUM OpenBao before 2.6.3 ACL Bypass via Dropped Templated Policy Denial
CVE-2026-115359 3.7 LOW OpenBao before 2.6.4 and 2.7.0 before 2.7.1 Role-Based Rate Limit Quota Bypass via Request
CVE-2026-115366 2.6 LOW OpenBao 2.3.0 before 2.6.3 Missing Root Namespace Enforcement in Plugin Catalog APIs
CVE-2026-115369 2.2 LOW OpenBao 2.5.0 before 2.6.2 PKI allowed_ip_sans_cidr Bypass via CSR IP SANs
CVE-2026-115364 2.2 LOW OpenBao before 2.6.3 Missing Header Check on Agent/Proxy Quit Endpoints
CVE-2026-115357 2.2 LOW OpenBao before 2.6.4 and 2.7.0 before 2.7.1 Improper Audit Logging of Root Generation and
CVE-2026-115362 2.2 LOW OpenBao before 2.6.4 and 2.7.0 before 2.7.1 Expired AppRole SecretID Authentication Bypass
CVE-2026-115358 2.0 LOW OpenBao before 2.6.3 Sensitive Data Leak in Audit Log via Malformed Parameters

IV. Related Vulnerabilities

Same product: openbao
Same vendor: openbao
Same weakness: CWE-212

V. Comments for CVE-2026-115363

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