Bug 2559315 (CVE-2026-115364)

Summary: CVE-2026-115364 github.com/openbao/openbao: openbao: Denial of Service via missing header check on quit endpoints
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. This vulnerability allows a remote attacker to cause a Denial of Service (DoS) by shutting down Agent and Proxy services. Due to a missing authorization check, administrative termination endpoints fail to validate the presence of the required security header even when header enforcement is enabled. An attacker could exploit this flaw, such as through Server-Side Request Forgery (SSRF), to trigger an unauthorized shutdown and disrupt availability.
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Description OSIDB Bzimport 2026-10-22 20:27:37 UTC
OpenBao before 2.6.3 contains a missing authorization check that allows attackers to stop Agent and Proxy services by omitting the X-Vault-Header. When require_request_header is enabled, attackers can send requests via server-side request forgery to /agent/v1/quit or /proxy/v1/quit to shut down these services.