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CVE-2026-115366— OpenBao 2.3.0 before 2.6.3 Missing Root Namespace Enforcement in Plugin Catalog APIs

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 在 2.3.0 至 2.6.3（不含 2.6.3）版本中存在一个授权不当漏洞。该漏洞允许拥有特权的子命名空间令牌修改插件注册信息，原因是 路径未限制为仅限根命名空间访问。攻击者可通过子命名空间的 挂载点删除现有注册项、创建无效注册项或注册已安装的插件，从而导致服务拒绝（DoS）。

CVSS 2.6 · Low EPSS 0.18% · P7

Affected Version Matrix 2

VendorProduct Version RangeStatus
openbao openbao 2.3.0< 2.6.3 affected
2.6.3 unaffected
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I. Basic Information for CVE-2026-115366

Vulnerability Information
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Vulnerability Title
OpenBao 2.3.0 before 2.6.3 Missing Root Namespace Enforcement in Plugin Catalog APIs
Source: CVE Program / CVE List V5
Vulnerability Description
OpenBao from 2.3.0 before 2.6.3 contains an improper authorization vulnerability that allows privileged child-namespace tokens to modify plugin registrations because /v1/sys/plugins/catalog/* is not restricted to the root namespace. Attackers can remove existing registrations, create invalid ones, or register installed plugins through a child namespace's sys/ mount, causing denial of service.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:N/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 2.3.0 ~ 2.6.3 -

II. Public POCs for CVE-2026-115366

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III. Intelligence Information for CVE-2026-115366

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Vendor Advisories for CVE-2026-115366 (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-2026-115363 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-2026-115369 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-2026-115366

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