CVE-2026-70900 Overview
CVE-2026-70900 is a broken access control vulnerability [CWE-284] in Oracle Hyperion Data Relationship Management, part of the Oracle Hyperion product family. The flaw resides in the Access and security component of version 11.2.25.0.000. An unauthenticated attacker with network access via HTTP can compromise the application, though exploitation is difficult. Successful attacks cross a trust boundary and produce a scope change that impacts additional products beyond Hyperion Data Relationship Management itself. Attackers can gain unauthorized read, create, modify, or delete access to all data accessible through the application.
Critical Impact
Unauthenticated network attackers can access, modify, or destroy all data reachable through Oracle Hyperion Data Relationship Management, with impact extending to adjacent Oracle components through scope change.
Affected Products
- Oracle Hyperion Data Relationship Management 11.2.25.0.000
- Oracle Hyperion product family (Access and security component)
- Dependent Oracle products affected through CVSS scope change
Discovery Timeline
- 2026-08-18 - CVE-2026-70900 published to the National Vulnerability Database (NVD)
- 2026-08-22 - Last updated in NVD database
Technical Details for CVE-2026-70900
Vulnerability Analysis
CVE-2026-70900 is classified as improper access control [CWE-284] in the Access and security component of Oracle Hyperion Data Relationship Management. The vulnerability allows an attacker without credentials to reach protected functionality over HTTP. Because the CVSS scope is marked as changed, exploitation grants access to resources managed by components outside the vulnerable module.
Successful exploitation yields high impact to confidentiality and integrity of all data accessible through the application. Availability is not affected. The Exploit Prediction Scoring System (EPSS) currently reports a probability of 0.243%, indicating a low near-term likelihood of exploitation attempts at scale.
Root Cause
The root cause is improper enforcement of access control within the Access and security component. Requests reaching sensitive functionality are not fully validated for authentication or authorization, allowing unauthenticated HTTP requests to invoke privileged operations. Oracle has not published component-level technical details in the public advisory.
Attack Vector
The attack vector is network-based over HTTP with no authentication and no user interaction required. Exploitation complexity is high, meaning the attacker must satisfy conditions outside their direct control, such as timing, configuration, or dependent state, to reliably trigger the flaw. No public proof-of-concept exploit is available. See the Oracle Security Alert for authoritative vendor detail.
Detection Methods for CVE-2026-70900
Indicators of Compromise
- Unauthenticated HTTP requests to Hyperion Data Relationship Management endpoints, particularly those tied to metadata, hierarchy, or user administration functions.
- Unexpected creation, modification, or deletion of dimension hierarchies, node metadata, or user records in Data Relationship Management audit logs.
- Anomalous cross-component API calls originating from the Hyperion Data Relationship Management host to adjacent Oracle services.
Detection Strategies
- Enable and centralize Hyperion Data Relationship Management audit logging, then alert on administrative actions performed by unauthenticated or unattributed sessions.
- Deploy web application firewall (WAF) rules that inspect HTTP requests to Hyperion endpoints and flag access to privileged paths without a valid session token.
- Correlate application-tier logs with network flow data to identify sources issuing high volumes of requests against Hyperion Data Relationship Management URLs.
Monitoring Recommendations
- Monitor authentication and authorization decisions inside the Access and security component for bypass patterns such as missing session identifiers.
- Baseline normal administrative activity in Data Relationship Management and alert on deviations in user, role, or hierarchy modification volume.
- Track outbound requests from the Hyperion host to identify scope-change exploitation targeting adjacent Oracle systems.
How to Mitigate CVE-2026-70900
Immediate Actions Required
- Apply the fix documented in the Oracle Security Alert to all Oracle Hyperion Data Relationship Management 11.2.25.0.000 deployments.
- Restrict network reachability of the Hyperion Data Relationship Management HTTP interface to trusted management networks and VPN segments only.
- Review audit logs for the period preceding patch deployment to identify unauthorized data access, modification, or deletion.
Patch Information
Oracle addresses CVE-2026-70900 in its Critical Patch Update and Security Alert program. Administrators should install the patch referenced in the Oracle Security Alert covering Hyperion Data Relationship Management 11.2.25.0.000. Verify patch application through Oracle's post-installation validation procedures.
Workarounds
- Place the Hyperion Data Relationship Management web tier behind a reverse proxy that enforces authentication before requests reach the application.
- Apply network segmentation and firewall rules to block HTTP access from untrusted zones until patching completes.
- Disable or restrict unused HTTP endpoints in the Access and security component where operationally feasible.
# Example: restrict inbound HTTP to Hyperion DRM to a trusted management CIDR
# Replace 10.10.0.0/24 with your approved administrative network
iptables -A INPUT -p tcp --dport 5240 -s 10.10.0.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 5240 -j DROP
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
