CVE-2026-70890 Overview
CVE-2026-70890 is a broken access control vulnerability [CWE-284] in the Oracle Hyperion Data Relationship Management product, within the Access and security component. The affected version is 11.2.25.0.000. An unauthenticated attacker with network access via HTTP can exploit this weakness without user interaction. Successful exploitation grants unauthorized access to critical data or complete access to all Oracle Hyperion Data Relationship Management accessible data. Oracle addressed the issue in the Oracle Security Alert CSPU-AUG-2026.
Critical Impact
Unauthenticated remote attackers can access sensitive enterprise data managed by Oracle Hyperion Data Relationship Management over HTTP, exposing financial and master data governance records.
Affected Products
- Oracle Hyperion Data Relationship Management 11.2.25.0.000
- Oracle Hyperion product family (Access and security component)
- Deployments exposing the Hyperion DRM HTTP interface to reachable networks
Discovery Timeline
- 2026-08-18 - CVE-2026-70890 published to the National Vulnerability Database
- 2026-08-18 - Oracle publishes Security Alert CSPU-AUG-2026 addressing the issue
- 2026-08-22 - Last updated in NVD database
Technical Details for CVE-2026-70890
Vulnerability Analysis
The vulnerability resides in the Access and security component of Oracle Hyperion Data Relationship Management (DRM). DRM governs master data hierarchies used across Oracle Hyperion financial and enterprise performance management workloads. The flaw permits unauthenticated network-based access to protected data through the HTTP interface. Attackers do not require credentials, elevated privileges, or user interaction. Impact is limited to confidentiality; integrity and availability of the application are not affected. Because DRM often stores chart-of-accounts, entity hierarchies, and cost center metadata, exposure of this data can facilitate follow-on fraud, reconnaissance, or insider-style abuse of downstream financial systems.
Root Cause
The vulnerability is categorized as Improper Access Control [CWE-284]. Oracle has not publicly disclosed the specific code path. Broadly, the Access and security component fails to enforce authentication or authorization checks on one or more HTTP-reachable resources, permitting an unauthenticated caller to retrieve data that should be gated by identity and role controls.
Attack Vector
Exploitation requires only network reachability to the Hyperion DRM HTTP interface. An attacker issues crafted HTTP requests to the affected endpoints without providing credentials. The server returns protected data due to the missing access control enforcement. No local access, phishing, or prior foothold is required. Refer to Oracle Security Alert CSPU-AUG-2026 for vendor-authoritative technical detail and patch identifiers.
Detection Methods for CVE-2026-70890
Indicators of Compromise
- Unauthenticated HTTP requests to Hyperion DRM endpoints returning 200 OK with data payloads
- Anomalous outbound data volumes from Hyperion DRM application servers
- Requests to DRM URIs from unexpected source IP ranges or geographies
- Absence of authenticated session cookies or tokens on data-returning requests
Detection Strategies
- Inspect Hyperion DRM web server access logs for requests lacking authentication headers that still return non-empty response bodies
- Baseline typical DRM API consumers and alert on new user agents, IPs, or query patterns
- Deploy web application firewall rules that require authenticated sessions on DRM data endpoints
- Correlate DRM access logs with identity provider logs to flag data retrieval without a matching authentication event
Monitoring Recommendations
- Forward Hyperion DRM application, web, and OS logs to a centralized analytics platform for retention and query
- Monitor east-west traffic to DRM servers, not only perimeter ingress, since many deployments sit on internal networks
- Track configuration drift on the Access and security component and alert on unexpected changes
How to Mitigate CVE-2026-70890
Immediate Actions Required
- Apply the fixes described in Oracle Security Alert CSPU-AUG-2026 to Oracle Hyperion Data Relationship Management 11.2.25.0.000
- Restrict network reachability of the DRM HTTP interface to authorized management networks and named service accounts
- Review DRM access logs from before the patch date for evidence of unauthenticated data retrieval
- Rotate any credentials, API tokens, or integration secrets that traverse or are referenced by DRM
Patch Information
Oracle published the fix in Oracle Security Alert CSPU-AUG-2026 on 2026-08-18. Administrators should download the corresponding patch bundle from My Oracle Support and apply it to Oracle Hyperion Data Relationship Management version 11.2.25.0.000. Validate the patch level after installation and confirm that the Access and security component enforces authentication on all HTTP endpoints. See Oracle Security Alert CSPU-AUG-2026 for the authoritative patch matrix.
Workarounds
- Place the DRM HTTP interface behind a reverse proxy that enforces authentication and IP allowlisting until the patch is applied
- Disable or firewall externally reachable DRM endpoints if business processes permit
- Require mutual TLS or VPN access for all DRM administrative and API traffic
- Increase logging verbosity on the Access and security component to support post-incident review
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
