CVE-2026-87139 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. Difficult to exploit vulnerability allows low privileged attacker with network access via HTTP to compromise Oracle Hyperion Data Relationship Management. Successful attacks of this vulnerability can result in takeover of Oracle Hyperion Data Relationship Management. CVSS 3.1 Base Score 7.5 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H).
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Analysis
by VulDB Data Team • 09/16/2026
The identified vulnerability resides within the Access and security component of Oracle Hyperion Data Relationship Management, specifically affecting version 11.2.26.0.000. This flaw represents a critical weakness in how the application handles authentication and authorization mechanisms over HTTP connections. Although the exploit complexity is rated as high, indicating that specific conditions or precise timing may be required to successfully leverage the issue, the low privilege requirement for an attacker significantly lowers the barrier to entry. An adversary with network access who possesses only standard user privileges can potentially bypass security controls designed to restrict administrative functions and sensitive data access. This misconfiguration or logic error in the underlying code allows a lower-level entity to escalate their permissions effectively, undermining the principle of least privilege that is fundamental to secure system architecture.
From an operational perspective, the impact of this vulnerability is severe across all three pillars of information security: confidentiality, integrity, and availability. A successful exploitation leads to complete takeover of the Oracle Hyperion Data Relationship Management environment. This means an attacker could read confidential financial data and strategic reports stored within the platform, alter critical business metrics or configurations without authorization, and disrupt service by crashing application processes or locking out legitimate users. The CVSS 3.1 base score of 7.5 reflects this high severity, driven primarily by the full impact on confidentiality, integrity, and availability when exploited remotely over a network with low privileges. Such an outcome could result in significant financial loss, regulatory non-compliance due to data breaches, and operational downtime that affects enterprise planning and analysis workflows dependent on accurate Hyperion outputs.
In terms of industry standard classifications, this vulnerability aligns with CWE-269 Improper Privilege Management or potentially CWE-862 Missing Authorization, depending on the specific technical root cause within the access control logic. The attack vector corresponds to ATT&CK technique T1078 Valid Accounts, where an attacker uses legitimate credentials obtained through phishing or credential stuffing to gain initial access, followed by privilege escalation techniques such as T1548 Abuse Elevation Control Mechanism if the flaw involves bypassing elevation controls. Understanding these mappings helps security teams contextualize the risk within broader threat landscapes and prioritize remediation efforts based on common attack patterns observed in enterprise environments.
Mitigation strategies should focus immediately on applying vendor-provided patches or updates that address this specific access control flaw. In cases where patching is not immediately feasible, network segmentation can be employed to restrict HTTP access to the Hyperion application from untrusted networks, ensuring only authorized internal subnets can reach the service. Additionally, implementing strict input validation and enforcing multi-factor authentication for all administrative accounts adds layers of defense that may mitigate exploitation attempts even if the underlying vulnerability remains present. Regular security audits focusing on privilege assignments and review of HTTP request handling in custom integrations with Hyperion are also recommended to detect any anomalous behavior indicative of attempted exploitation.