CVE-2026-70901: Oracle Hyperion DRM Auth Bypass Vulnerability

CVE-2026-70901 Overview

CVE-2026-70901 affects Oracle Hyperion Data Relationship Management version 11.2.25.0.000 in the Access and security component. The flaw allows an unauthenticated attacker with network access via HTTP to compromise the application. Exploitation requires human interaction from a user other than the attacker, typically through a crafted link or resource. Successful exploitation results in unauthorized creation, deletion, or modification of critical data, along with unauthorized read access to all data accessible by Oracle Hyperion Data Relationship Management. The weakness is classified under [CWE-284] Improper Access Control.

Critical Impact
Unauthenticated network-based attackers can achieve full read and write access to master data managed by Oracle Hyperion Data Relationship Management when a targeted user interacts with malicious content.

Affected Products

Oracle Hyperion Data Relationship Management 11.2.25.0.000
Oracle Hyperion product family (Access and security component)
Deployments exposing the Data Relationship Management web interface over HTTP

Discovery Timeline

2026-08-18 - CVE-2026-70901 published to the National Vulnerability Database
2026-08-22 - Last updated in NVD database

Technical Details for CVE-2026-70901

Vulnerability Analysis

CVE-2026-70901 is an improper access control vulnerability [CWE-284] within the Access and security component of Oracle Hyperion Data Relationship Management. The affected component governs authorization decisions for master data operations. Because access control checks are not enforced correctly, an attacker can trigger privileged actions through a victim user session.

The attack path requires user interaction, which aligns with client-assisted exploitation patterns such as CSRF-style flows or malicious link handling. An unauthenticated attacker crafts a request that, once triggered by an authenticated user, is processed with that user's privileges. Confidentiality and integrity of master data are both impacted, while availability is not affected.

Oracle Hyperion Data Relationship Management centralizes enterprise master data for financial consolidation, planning, and reporting. Unauthorized modification of hierarchies, nodes, or properties can propagate to downstream ERP and EPM systems, corrupting financial reporting workflows.

Root Cause

The root cause is improper enforcement of access control in the Access and security component. The application does not adequately validate that the requesting context is authorized to perform the requested operation, allowing state-changing requests to succeed when initiated indirectly through a legitimate user.

Attack Vector

The attack vector is network-based over HTTP with low attack complexity and no privileges required. The attacker must induce a target user, such as an authenticated Hyperion administrator or data steward, to interact with attacker-controlled content. Upon interaction, the vulnerable endpoint executes actions in the victim's authorization context, granting read and write access to Oracle Hyperion Data Relationship Management data.

No verified proof-of-concept code is publicly available. Refer to the Oracle Security Alert CSPUAUG2026 for authoritative technical details.

Detection Methods for CVE-2026-70901

Indicators of Compromise

Unexpected hierarchy, node, or property changes in Oracle Hyperion Data Relationship Management audit logs originating from legitimate user accounts
HTTP requests to Data Relationship Management endpoints with Referer headers pointing to untrusted external origins
Bulk create, delete, or modify operations initiated outside of standard change-management windows

Detection Strategies

Correlate Data Relationship Management application logs with web proxy and email gateway telemetry to identify users who visited external links prior to unauthorized changes
Baseline normal administrative activity and alert on deviations in the volume or timing of master-data modifications
Inspect HTTP traffic to Data Relationship Management endpoints for cross-origin requests lacking valid anti-forgery tokens

Monitoring Recommendations

Enable verbose audit logging on Oracle Hyperion Data Relationship Management and forward events to a centralized SIEM for retention and analysis
Monitor privileged Hyperion accounts for anomalous session activity, including concurrent logins and unusual source IPs
Track outbound web traffic from workstations used by Hyperion administrators to identify phishing or watering-hole precursors

How to Mitigate CVE-2026-70901

Immediate Actions Required

Apply the fixes referenced in the Oracle Security Alert CSPUAUG2026 to all instances of Oracle Hyperion Data Relationship Management 11.2.25.0.000
Restrict network exposure of the Data Relationship Management web interface to trusted management networks and VPN users
Require Hyperion administrators to use dedicated browsers or privileged access workstations for administrative sessions
Reinforce user awareness on phishing and link-based social engineering targeting finance and EPM staff

Patch Information

Oracle addresses this vulnerability in the Critical Security Patch Update referenced by Oracle Security Alert CSPUAUG2026. Administrators should review the alert for the exact patch bundle applicable to Oracle Hyperion Data Relationship Management 11.2.25.0.000 and validate deployment in a staging environment before production rollout.

Workarounds

Limit HTTP access to Data Relationship Management endpoints using reverse-proxy allowlists until patches are applied
Enforce short session timeouts and re-authentication for sensitive master-data operations
Require multi-factor authentication for all Hyperion administrative accounts to reduce the impact of session abuse

bash

# Example reverse-proxy allowlist restricting DRM to management subnet
location /oracle-drm/ {
    allow 10.20.30.0/24;
    deny all;
    proxy_pass https://hyperion-drm.internal.example.com/;
}