CVE-2026-87198 in Hyperion Financial Management
Summary
by MITRE • 09/16/2026
Vulnerability in the Oracle Hyperion Financial Management product of Oracle Hyperion (component: Security). The supported version that is affected is 11.2.26.0.000. Difficult to exploit vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle Hyperion Financial Management. Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Oracle Hyperion Financial Management accessible data as well as unauthorized access to critical data or complete access to all Oracle Hyperion Financial Management accessible data. CVSS 3.1 Base Score 7.4 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N).
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Analysis
by VulDB Data Team • 09/16/2026
The identified vulnerability resides within the Security component of Oracle Hyperion Financial Management, specifically affecting version 11.2.26.0.000 and potentially other supported releases in that lineage. This flaw represents a critical security deficiency that allows an unauthenticated attacker to compromise the integrity and confidentiality of the application environment. The nature of this vulnerability is characterized by its difficulty to exploit, which suggests that while it does not require complex chaining or specific user interaction vectors such as social engineering, it may involve intricate manipulation of HTTP requests or state parameters that are non-trivial for a casual actor to identify and execute successfully. Despite the high complexity required for exploitation, the potential impact is severe due to the lack of authentication requirements, meaning any network-accessible host running this software version is theoretically within reach of an adversary who can craft the specific malicious payload.
From a technical perspective, the vulnerability leverages flaws in how the application handles security controls over HTTP connections. The absence of proper access control checks or input validation mechanisms allows attackers to bypass authentication protocols entirely. This aligns with common weaknesses found in web applications where session management or role-based access control is improperly implemented. By exploiting this flaw, an attacker can interact directly with sensitive endpoints that should be restricted to authorized users only. The use of HTTP as the attack vector indicates that these requests are transmitted over standard network ports, making them accessible across internal and potentially external networks depending on the deployment architecture. This exposure highlights a significant gap in the perimeter defense strategy for systems hosting Oracle Hyperion Financial Management if not properly segmented or filtered by upstream security devices.
The operational impact of this vulnerability is substantial, primarily affecting the confidentiality and integrity aspects of the CIA triad, as reflected in its CVSS 3.1 base score of 7.4 with an A:N (Availability) rating. Successful exploitation enables unauthorized creation, deletion, or modification of critical data within the financial management system. This capability poses a direct threat to the accuracy and reliability of financial reporting, which is the core function of Oracle Hyperion Financial Management. An attacker could alter transaction records, manipulate budget figures, or delete essential audit trails, leading to severe regulatory compliance issues and potential financial loss for the organization. Furthermore, the vulnerability grants unauthorized access to critical data and potentially complete access to all accessible data within the system. This level of privilege escalation effectively neutralizes existing security boundaries, allowing an adversary to exfiltrate sensitive financial information, trade secrets, or personally identifiable information stored in conjunction with financial records.
In terms of industry standard classifications, this vulnerability maps closely to CWE-287: Improper Authentication and CWE-918: Server-Side Request Forgery (SSRF) if the exploitation involves leveraging internal services, though primarily it reflects a failure in enforcing access controls against unauthenticated requests. It also aligns with MITRE ATT&CK technique T1078: Valid Accounts or more accurately T1078.003: Cloud Accounts if cloud-based deployments are considered, but given the unauthenticated nature, it is best described as an exploitation of missing authentication checks which facilitates lateral movement and data exfiltration phases in a kill chain. The high confidentiality impact underscores the risk to proprietary financial models and strategic planning documents housed within the application database.
Mitigation strategies must focus on immediate remediation through vendor-provided patches or updates that address the specific security flaw in version 11.2.26.0.000. Organizations should verify their current software versions against Oracle’s official advisory for this vulnerability and apply the latest cumulative patch set as soon as possible. In scenarios where immediate patching is not feasible due to operational constraints, compensating controls are essential. These include restricting network access to the Hyperion Financial Management servers via firewall rules that limit HTTP traffic to trusted IP addresses only, thereby reducing the attack surface exposed to unauthenticated actors. Additionally, implementing Web Application Firewalls (WAF) with specific rule sets designed to detect and block anomalous HTTP requests associated with this vulnerability can provide a layer of defense in depth. Regular security audits and penetration testing should be conducted to identify similar weaknesses in other components of the Oracle Hyperion suite, ensuring that authentication mechanisms are robustly enforced across all accessible endpoints.