Bug 2559285 (CVE-2026-115359)

Summary: CVE-2026-115359 github.com/openbao/openbao: OpenBao: Rate limit quota bypass via improper role resolution
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
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Priority: low    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in OpenBao. When processing requests with form-encoded bodies or forwarded certificates, the rate limit quota subsystem fails to resolve backend roles properly, preventing quota rules from being enforced. A remote caller can exploit this flaw to bypass rate limits and repeatedly issue tokens without consuming their allocated budget. This unrestricted request processing can lead to resource exhaustion and a Denial of Service (DoS).
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Description OSIDB Bzimport 2026-10-22 20:08:42 UTC
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.