CVE-2026-70896: Oracle Hyperion DRM Auth Bypass Vulnerability

CVE-2026-70896 Overview

CVE-2026-70896 is a high-severity access control vulnerability in Oracle Hyperion Data Relationship Management (DRM) version 11.2.25.0.000. The flaw resides in the Access and security component. An unauthenticated attacker with network access via HTTP can exploit this weakness to compromise confidentiality of the affected system. Successful exploitation results in unauthorized access to critical data or complete read access to all data accessible through Oracle Hyperion DRM. Oracle disclosed the vulnerability in the Oracle Security Alert August 2026.

Critical Impact
Unauthenticated remote attackers can read all data managed by Oracle Hyperion Data Relationship Management, exposing sensitive financial master data.

Affected Products

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

Discovery Timeline

2026-08-18 - CVE-2026-70896 published to the National Vulnerability Database
2026-08-18 - Oracle publishes the August 2026 Security Alert
2026-08-22 - Last updated in NVD database

Technical Details for CVE-2026-70896

Vulnerability Analysis

CVE-2026-70896 is classified under [CWE-284] (Improper Access Control). The vulnerability affects the Access and security component of Oracle Hyperion Data Relationship Management, the module responsible for enforcing authentication and authorization on incoming HTTP requests. Because the flaw is reachable without credentials or user interaction, an attacker only needs network reachability to the DRM application endpoint.

Exploitation impacts confidentiality only. Data integrity and availability remain unaffected, which suggests the flaw exposes read paths rather than state-modifying operations. Oracle Hyperion DRM typically stores enterprise master data used for financial consolidation, regulatory reporting, and analytics, so unauthorized disclosure carries direct compliance implications.

Root Cause

The root cause is improper enforcement of access control checks within the DRM Access and security component. Requests that should require an authenticated session are processed without validating the caller's identity or entitlements. This aligns with [CWE-284] patterns where authorization decisions are missing, incomplete, or bypassable through crafted HTTP request paths or parameters.

Attack Vector

The attack vector is network-based and requires no authentication or user interaction. An attacker sends crafted HTTP requests to the exposed Oracle Hyperion DRM interface. The server processes these requests as if they originated from an authorized source and returns sensitive data. Oracle rates the vulnerability as easily exploitable, indicating that exploitation does not require specialized conditions.

No verified proof-of-concept code has been published. Refer to the Oracle Security Alert August 2026 for vendor-supplied technical context.

Detection Methods for CVE-2026-70896

Indicators of Compromise

Unauthenticated HTTP requests to Oracle Hyperion DRM endpoints returning HTTP 200 responses with data payloads
Anomalous volumes of read operations against DRM APIs originating from a single external IP
Requests to DRM administrative or data export URLs lacking valid session cookies or authorization headers
Outbound data transfers from DRM servers to unrecognized destinations

Detection Strategies

Enable verbose access logging on the DRM web tier and forward logs to a centralized analytics platform for correlation
Baseline normal authenticated request patterns for DRM and alert on deviations, including requests without session context
Deploy web application firewall (WAF) rules that flag unauthenticated access attempts to sensitive DRM paths
Correlate DRM access logs with identity provider authentication events to detect requests lacking a corresponding sign-in

Monitoring Recommendations

Monitor for spikes in response sizes from DRM endpoints, which may indicate bulk data extraction
Track HTTP request rates by source IP against DRM hosts and alert on high-volume scanning behavior
Review firewall and reverse proxy logs for external connections to internal DRM instances that should not be internet-facing

How to Mitigate CVE-2026-70896

Immediate Actions Required

Apply the patches provided in the Oracle August 2026 Critical Patch Update to all Oracle Hyperion DRM 11.2.25.0.000 deployments
Restrict network access to DRM interfaces to trusted management networks and VPN users only
Audit DRM access logs for the past 90 days to identify prior unauthorized access
Rotate any credentials or secrets that may have been exposed through DRM-managed data

Patch Information

Oracle addressed CVE-2026-70896 in the August 2026 Security Alert. Administrators should review the Oracle Security Alert August 2026 advisory and apply the referenced patch bundle to Oracle Hyperion Data Relationship Management 11.2.25.0.000. Test the patch in a non-production environment before production rollout to validate compatibility with existing integrations.

Workarounds

Place Oracle Hyperion DRM behind a reverse proxy that enforces authentication before requests reach the application
Apply IP allow-listing at the network or WAF layer to limit access to known administrative subnets
Disable any unused DRM web services or API endpoints until the patch is applied
Increase logging verbosity and monitor DRM access in near real time during the pre-patch window

bash

# Example: restrict DRM access at the network layer using iptables
iptables -A INPUT -p tcp --dport 5240 -s 10.0.0.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 5240 -j DROP