CVE-2026-87137: Oracle Hyperion DRM Auth Bypass Vulnerability

CVE-2026-87137 Overview

CVE-2026-87137 is a high-severity vulnerability in the Oracle Hyperion Data Relationship Management (DRM) product, within the Access and security component. The affected supported version is 11.2.26.0.000. A low-privileged attacker with network access via HTTP can exploit the flaw, provided a separate user performs an interaction such as clicking a crafted link. Successful exploitation crosses a trust boundary (scope change) and can result in unauthorized access to critical data across the DRM environment, along with limited unauthorized modification of accessible data.

Critical Impact
Exploitation can yield complete read access to DRM data and limited write access, with impact extending beyond the vulnerable component into additional Oracle Hyperion products.

Affected Products

Oracle Hyperion Data Relationship Management 11.2.26.0.000
Oracle Hyperion (Access and security component)
Downstream Oracle Hyperion products reachable through the scope-change boundary

Discovery Timeline

2026-09-15 - CVE-2026-87137 published to the National Vulnerability Database
2026-09-16 - Last updated in NVD database

Technical Details for CVE-2026-87137

Vulnerability Analysis

The flaw resides in the Access and security component of Oracle Hyperion DRM. An authenticated attacker holding low privileges can send a crafted HTTP request that, when combined with user interaction from a different account, causes actions to execute in the victim's context. The scope change indicates that the vulnerable component and the impacted component operate under different security authorities, allowing effects to propagate to additional Oracle Hyperion products. The impact profile favors confidentiality, with high confidentiality impact, low integrity impact, and no availability impact. According to Oracle, successful attacks can result in complete disclosure of DRM-accessible data and partial unauthorized modification of that data.

Root Cause

The vulnerability originates in how the Access and security component validates authenticated requests and enforces trust boundaries between DRM and interconnected Hyperion services. The requirement for user interaction from another party, combined with the confidentiality-dominant impact and scope change, aligns with client-side trust and cross-component authorization weaknesses commonly associated with cross-site request forgery or reflected content handling in web management interfaces.

Attack Vector

An attacker authenticates to Oracle Hyperion DRM with any low-privileged account. The attacker then delivers a crafted HTTP payload, typically via a link or embedded resource, to another Hyperion user. When that user interacts with the payload, the DRM server processes the action with the victim's privileges, allowing the attacker to read or modify data that the victim can access. Because of scope change, the resulting operations may reach adjacent Oracle Hyperion products. Refer to the Oracle Security Alert CSP USEP 2026 for authoritative technical details.

Detection Methods for CVE-2026-87137

Indicators of Compromise

Unexpected HTTP requests to Oracle Hyperion DRM endpoints originating from user browsers immediately after clicks on external links or email content.
Audit log entries showing privileged DRM operations performed by users who did not initiate those actions in the DRM console.
Anomalous cross-product access patterns between Hyperion DRM and adjacent Hyperion services outside normal workflows.

Detection Strategies

Correlate DRM web server access logs with authenticated session activity to identify requests that lack expected referrers or contain suspicious query parameters.
Baseline normal HTTP methods and parameter shapes for DRM administrative endpoints, then alert on deviations.
Review DRM security event logs for read or modify operations by low-privileged accounts that precede activity from higher-privileged users.

Monitoring Recommendations

Ingest Oracle Hyperion DRM application, web server, and authentication logs into a centralized analytics platform for retention and correlation.
Monitor for repeated access to sensitive DRM data objects by any single low-privileged account across short time windows.
Alert on outbound HTTP referrers to DRM endpoints from non-corporate domains, indicating potential social-engineering delivery of crafted requests.

How to Mitigate CVE-2026-87137

Immediate Actions Required

Apply the fixes referenced in the Oracle Security Alert CSP USEP 2026 to all Oracle Hyperion DRM 11.2.26.0.000 deployments.
Restrict network exposure of the DRM web interface to trusted management networks and VPN clients only.
Audit DRM user accounts and remove or downgrade any accounts that do not require active access.

Patch Information

Oracle addresses this vulnerability through the fixes distributed in the Oracle Security Alert CSP USEP 2026. Administrators should consult the advisory for the specific patch identifiers and installation guidance applicable to Oracle Hyperion Data Relationship Management version 11.2.26.0.000.

Workarounds

Enforce strict session controls, including short session lifetimes and re-authentication for sensitive DRM operations.
Deploy a web application firewall in front of DRM to filter requests lacking valid origin or referrer headers.
Provide targeted user awareness training for Hyperion administrators to reduce the likelihood of interacting with crafted links.
Segment Hyperion product interconnections so that DRM cannot trigger unaudited actions in adjacent components.

bash

# Example: restrict DRM web endpoint access at the reverse proxy
# (nginx snippet - adjust to environment)
location /drm/ {
    allow 10.10.0.0/16;      # management subnet
    allow 10.20.0.0/24;      # VPN pool
    deny  all;
    proxy_set_header Referer $http_referer;
    proxy_pass https://hyperion-drm.internal;
}