CVE-2026-87209 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 and network access via HTTP to execute successfully against the target system.
From a technical perspective, the flaw likely stems from insufficient validation or authorization checks within the web-based interface that handles user authentication and session management. An attacker with valid but limited user privileges can leverage this weakness to escalate their effective permissions beyond what is intended by the application's security model. This bypass of access controls enables the adversary to retrieve sensitive financial data, which may include confidential reports, transaction records, or strategic planning documents stored within the Hyperion ecosystem. The use of HTTP rather than HTTPS further exacerbates the risk, as it allows for potential interception and manipulation of traffic if not properly secured by external network devices, although the vulnerability itself is exploitable even without such intermediate attacks due to the internal logic flaw.
The operational impact of this vulnerability extends beyond mere data confidentiality breaches. Successful exploitation can also lead to a partial denial of service against Oracle Hyperion Financial Management services. This availability impact suggests that the exploit may involve resource exhaustion or state corruption within the application server, causing degradation in performance or temporary unavailability for legitimate users. The combination of high confidentiality impact and low-to-medium availability impact results in a CVSS 3.1 Base Score of 7.1, indicating a High severity rating. This score reflects the critical nature of financial management systems where data integrity and accessibility are paramount to business operations.
In terms of industry standard classifications, this vulnerability aligns with CWE-269 Improper Privilege Management or CWE-862 Missing Authorization, as it allows an actor to access resources without proper authorization. Furthermore, the exploitation technique corresponds to ATT&CK tactic T1078 Valid Accounts and specifically sub-technique T1078.003 Cloud Accounts if deployed in a cloud environment, or general valid account abuse on-premises. The ability to cause partial denial of service may also relate to CWE-400 Uncontrolled Resource Consumption, although the primary vector is privilege escalation through web application flaws.
Mitigation strategies must prioritize immediate patching by Oracle for version 11.2.26.0.000 and any other affected versions listed in official security advisories. In addition to applying vendor-provided patches, organizations should enforce strict network segmentation to limit HTTP access to the Hyperion application servers from untrusted networks. Implementing HTTPS with strong certificate validation is essential to prevent man-in-the-middle attacks that could complement this vulnerability. Access control policies should be reviewed to ensure the principle of least privilege is strictly enforced, minimizing the impact if a low-privileged account is compromised. Regular security audits and penetration testing focused on web application vulnerabilities are recommended to identify similar flaws in authentication and authorization logic before they can be exploited by malicious actors.