CVE-2026-70870 in Hyperion Data Relationship Management
Summary
by MITRE • 08/19/2026
Vulnerability in the Oracle Hyperion Data Relationship Management product of Oracle Hyperion (component: Web Client - Unicode). The supported version that is affected is 11.2.23.0.000. 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 access to critical data or complete access to all Oracle Hyperion Data Relationship Management accessible data and unauthorized ability to cause a partial denial of service (partial DOS) of Oracle Hyperion Data Relationship Management. CVSS 3.1 Base Score 8.2 (Confidentiality and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L).
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Analysis
by VulDB Data Team • 08/19/2026
The Oracle Hyperion Data Relationship Management product, specifically version 11.2.23.0.000 within the Web Client - Unicode component, is susceptible to a critical security flaw that permits unauthenticated attackers to compromise system integrity and data confidentiality. This vulnerability stems from improper handling of Unicode characters in the web client interface, which serves as the primary entry point for user interactions with the application via HTTP protocols. The nature of this defect allows an attacker who has network access to the target system to exploit the parsing logic without requiring any form of authentication or user interaction. Such a configuration significantly lowers the barrier for exploitation, enabling remote adversaries to bypass standard security controls and gain unauthorized footholds within the environment.
The technical mechanism behind this vulnerability likely involves buffer handling errors or input validation failures when processing specially crafted Unicode sequences. In many web applications, improper sanitization of multibyte character sets can lead to memory corruption, logic bypasses, or injection attacks that manipulate server-side processes. By sending maliciously formatted HTTP requests containing specific Unicode payloads, an attacker can trigger these underlying flaws in the Web Client component. The lack of authentication requirements means that any entity capable of reaching the service over the network can attempt this exploitation, making it a high-risk vector for initial access and subsequent lateral movement within the organization's infrastructure.
The operational impact of successfully exploiting this vulnerability is severe, primarily affecting the confidentiality and availability aspects of the CIA triad as indicated by its CVSS 3.1 base score of 8.2. Attackers can achieve unauthorized access to critical data stored within Oracle Hyperion Data Relationship Management, potentially exposing sensitive financial models, planning assumptions, and strategic business intelligence. Furthermore, the vulnerability allows for a partial denial of service condition, which disrupts normal operations by consuming system resources or causing application instability. This dual impact not only compromises data privacy but also hinders organizational productivity and decision-making capabilities that rely on the continuous availability of these enterprise performance management tools.
From a classification perspective, this issue aligns with CWE-20 Improper Input Validation, as it involves the failure to adequately sanitize user-supplied input before processing. Additionally, given its potential for unauthorized access without authentication, it relates closely to CWE-352 Cross-Site Request Forgery or potentially CWE-79 if script injection is involved in the Unicode handling logic. In terms of adversary tactics, this vulnerability facilitates Initial Access through exploitable remote services and may lead to Data Exfiltration depending on the specific outcome of the exploit. It represents a significant risk vector that requires immediate attention due to its high availability impact and ease of exploitation by unauthenticated network actors.
Mitigation strategies should focus on applying vendor-provided security patches or updates immediately if available for version 11.2.23.0.000. Organizations must ensure that the Oracle Hyperion Data Relationship Management web client is not exposed directly to untrusted networks without robust perimeter defenses such as Web Application Firewalls configured to detect and block anomalous Unicode patterns. Implementing strict input validation at the application layer, restricting HTTP access through network segmentation, and enforcing multi-factor authentication for administrative interfaces can further reduce the attack surface. Regular vulnerability assessments and penetration testing should be conducted to identify similar weaknesses in other components of the Hyperion suite before they are exploited by malicious actors seeking to compromise critical business data.