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CVE-2026-115359— OpenBao before 2.6.4 and 2.7.0 before 2.7.1 Role-Based Rate Limit Quota Bypass via Request Parsing

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.

在 OpenBao 2.6.4 之前的版本以及 2.7.x 系列中 2.7.1 之前的版本中，其速率限制配额子系统存在一个缺陷：当请求包含表单编码的正文（form-encoded bodies）或转发证书（forwarded certificates）时，角色解析会失败，导致针对特定后端角色的配额规则无法生效。这使得合法调用者能够反复生成令牌，而无需消耗已配置的基于角色的速率限制配额。

CVSS 3.7 · Low

Affected Version Matrix 4

VendorProduct Version RangeStatus
openbao openbao < 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-2026-115359

Vulnerability Information
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Vulnerability Title
OpenBao before 2.6.4 and 2.7.0 before 2.7.1 Role-Based Rate Limit Quota Bypass via Request Parsing
Source: CVE Program / CVE List V5
Vulnerability Description
OpenBao before 2.6.4 and 2.7.x before 2.7.1 contains a flaw in its rate limit quota subsystem where role resolution fails for requests with form-encoded bodies or forwarded certificates, so quota rules scoped to backend-specific roles are not enforced. Valid callers can repeatedly issue tokens without consuming the configured role-based rate limit budget.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
交互频率的控制不恰当
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
openbao openbao 0 ~ 2.6.4 -

II. Public POCs for CVE-2026-115359

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III. Intelligence Information for CVE-2026-115359

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Vendor Advisories for CVE-2026-115359 (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-2026-115363 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-799

V. Comments for CVE-2026-115359

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