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CVE-2026-115361— OpenBao before 2.6.3 ACL Bypass via Dropped Templated Policy Denial

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 2.6.3 之前的版本存在一个 ACL（访问控制列表）绕过漏洞。该漏洞会导致在通配符授权（wildcard grants）中，基于被禁止的身份元数据模板的显式拒绝规则被静默丢弃。若攻击者的身份元数据中包含通配符或路径片段，则其能够访问本应在更广泛的通配符授权范围内被拒绝的路径。

CVSS 4.1 · Medium

Possible ATT&CK Techniques 1 AI

T1548.001 · Setuid and Setgid

Affected Version Matrix 2

VendorProduct Version RangeStatus
openbao openbao < 2.6.3 affected
2.6.3 unaffected
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I. Basic Information for CVE-2026-115361

Vulnerability Information
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Vulnerability Title
OpenBao before 2.6.3 ACL Bypass via Dropped Templated Policy Denial
Source: CVE Program / CVE List V5
Vulnerability Description
OpenBao before 2.6.3 contains an ACL bypass vulnerability that silently drops explicit deny rules based on forbidden identity metadata templates within wildcard grants. Attackers whose identity metadata contains wildcard or path segments can access paths that should be denied within the broader wildcard-granted scope.
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:L
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不正确
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
openbao openbao 0 ~ 2.6.3 -

II. Public POCs for CVE-2026-115361

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III. Intelligence Information for CVE-2026-115361

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Vendor Advisories for CVE-2026-115361 (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-2026-115359 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-2026-115363 3.3 LOW OpenBao 2.2.0 before 2.6.4 and 2.7.0 before 2.7.1 ACME EAB MAC Key Disclosure via Sanitize
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-863

V. Comments for CVE-2026-115361

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