CVE-2026-87191 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. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise Oracle Hyperion Financial Management. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Oracle Hyperion Financial Management accessible data and unauthorized ability to cause a partial denial of service (partial DOS) of Oracle Hyperion Financial Management. CVSS 3.1 Base Score 7.1 (Confidentiality and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:L).
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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 significant security deficiency that allows for unauthorized access to critical data or complete compromise of all accessible information within the application environment. The nature of this vulnerability is characterized by its ease of exploitation, requiring only low-privileged credentials from an attacker who has network-level access via HTTP protocols. This accessibility profile suggests that the attack vector does not require complex social engineering or physical proximity, relying instead on standard web-based interactions to trigger the underlying security failure.
From a technical perspective, this vulnerability aligns with common patterns found in enterprise financial management systems where authentication mechanisms or session handling may be insufficiently validated against unauthorized requests. The ability of an attacker with low privileges to escalate their access implies that proper role-based access control checks are either missing or bypassable during specific HTTP interactions. This flaw directly impacts the confidentiality and availability aspects of the security triad, as indicated by the CVSS 3.1 base score of 7.1. The high impact on confidentiality stems from the potential for exfiltration of sensitive financial data, while the low to medium impact on availability reflects the capability to cause a partial denial of service through resource exhaustion or application instability triggered by malicious requests.
The operational impact of this vulnerability is severe due to the nature of Oracle Hyperion Financial Management as a core enterprise system used for critical financial reporting and planning. Unauthorized access could lead to the manipulation of financial records, theft of proprietary business intelligence, or disruption of essential accounting processes. The partial denial of service capability further exacerbates the risk by potentially halting operations during critical closing periods or audit windows. Attackers leveraging this flaw can operate with relative stealth if logging mechanisms are not adequately monitored, as they may appear to be performing legitimate low-privilege actions until their access is escalated or data is extracted.
Mitigation strategies must focus on immediate patching and enhanced monitoring. Oracle should apply the latest security patches that address the specific flaws in the Security component for version 11.2.26.0.000. In environments where patching cannot be immediately implemented, network segmentation should be enforced to restrict HTTP access to Hyperion servers only from trusted IP ranges and administrative workstations. Additionally, implementing strict input validation on all web-facing endpoints can help mitigate exploitation attempts. Security teams should also enable detailed logging for authentication failures and unusual session behaviors to detect potential exploitation activities in real-time. Regular audits of user privileges are essential to ensure that low-privileged accounts do not possess excessive permissions that could be leveraged by an attacker exploiting this vulnerability.
This incident underscores the importance of maintaining up-to-date software versions and adhering to industry standards such as CWE, which likely categorizes this flaw under weaknesses related to insufficient authentication or authorization checks. Furthermore, aligning defense strategies with MITRE ATT&CK frameworks can help identify similar tactics used by adversaries targeting financial management systems. By treating low-privileged network access as a high-risk vector, organizations can better protect their critical financial infrastructure from compromise and ensure the integrity of their data assets.