CVE-2026-87148 in Hyperion Data Relationship Management
Summary
by MITRE • 09/16/2026
Vulnerability in the Oracle Hyperion Data Relationship Management product of Oracle Hyperion (component: Access and security). The supported version that is affected is 11.2.26.0.000. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle Hyperion Data Relationship Management. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Oracle Hyperion Data Relationship Management. CVSS 3.1 Base Score 7.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).
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Analysis
by VulDB Data Team • 09/16/2026
The Oracle Hyperion Data Relationship Management product, specifically version 11.2.26.0.000 within the Access and security component, contains a critical vulnerability that allows for unauthenticated remote exploitation via HTTP. This flaw represents a significant risk to organizations relying on this enterprise performance management software, as it enables an attacker with network access to disrupt service availability without requiring any form of authentication or user interaction. The nature of this vulnerability aligns closely with CWE-400, which describes conditions where resources are not properly limited against the actor, leading to resource exhaustion. In this context, the application fails to adequately constrain input processing or session handling under specific HTTP requests, allowing an external party to trigger internal errors that degrade system stability.
From a technical perspective, the vulnerability manifests as a denial of service condition characterized by either a complete hang or a frequently repeatable crash of the Oracle Hyperion Data Relationship Management server process. The CVSS 3.1 base score of 7.5 reflects high severity due to its impact on availability, with vectors indicating network accessibility, low attack complexity, and no prerequisites for privileges or user interaction. This suggests that the flaw likely resides in how the application parses or processes specific HTTP headers or request payloads, leading to memory corruption, thread deadlock, or unhandled exceptions within the server's core logic. Such behavior is consistent with CWE-20 Improper Input Validation, where insufficient sanitization of incoming data leads to catastrophic failure states rather than functional errors.
The operational impact of this vulnerability is severe for any production environment running the affected version. A successful exploit results in a complete denial of service, rendering the Oracle Hyperion Data Relationship Management application inaccessible to legitimate users. This disruption can halt critical business processes that depend on accurate data relationship mapping and financial reporting capabilities provided by the platform. Since no authentication is required, even external-facing instances are at immediate risk if exposed directly to untrusted networks without adequate perimeter controls. The repeatable nature of the crash means an attacker could sustain a prolonged outage through continuous exploitation attempts, effectively paralyzing organizational operations until service restoration occurs.
Mitigation strategies must prioritize both technical remediation and architectural defense layers. Oracle has released patches for version 11.2.26.0.000 to address this specific flaw; therefore, immediate application of the latest security patch is the primary corrective action. In environments where patching cannot be implemented instantly due to operational constraints, network-level mitigations should be deployed. This includes restricting HTTP access to the Oracle Hyperion Data Relationship Management interface exclusively from trusted internal IP ranges using firewall rules or reverse proxy configurations. Additionally, implementing Web Application Firewalls with specific rule sets designed to detect and block anomalous request patterns associated with denial-of-service attacks can provide a temporary layer of protection against exploitation attempts while patching efforts are underway.
This vulnerability maps directly to MITRE ATT&CK technique T1499 Endpoint Denial of Service, specifically under the sub-technique for application exhaustion or resource consumption. Understanding this classification helps security teams align their detection and response procedures with established frameworks. Monitoring logs for unusual spikes in HTTP request volume directed at Oracle Hyperion endpoints can serve as an early warning indicator of active exploitation attempts. Furthermore, ensuring that all components within the Oracle Hyperion suite are updated to supported versions reduces the attack surface by eliminating known weaknesses across related modules. Regular vulnerability assessments and penetration testing focused on authentication bypasses and input validation flaws will help maintain a robust security posture against similar threats in enterprise application environments.