CVE-2026-62571 Overview
CVE-2026-62571 affects the Security component of Oracle Hyperion Calculation Manager, part of the Oracle Hyperion product suite. The vulnerability affects version 11.2.25.0.000 and allows a low-privileged attacker with network access via HTTP to compromise the application. Successful exploitation can result in unauthorized access to critical data or complete access to all data accessible through Oracle Hyperion Calculation Manager. The vulnerability carries a scope change, meaning exploitation can significantly impact additional Oracle products beyond the vulnerable component itself.
Critical Impact
A low-privileged authenticated attacker can compromise confidentiality across multiple Oracle products through a single network-accessible vector, with no user interaction required.
Affected Products
- Oracle Hyperion Calculation Manager version 11.2.25.0.000
- Oracle Hyperion product suite (Security component)
- Additional Oracle products impacted through scope change
Discovery Timeline
- 2026-08-18 - CVE-2026-62571 published to NVD
- 2026-08-20 - Last updated in NVD database
Technical Details for CVE-2026-62571
Vulnerability Analysis
The flaw resides in the Security component of Oracle Hyperion Calculation Manager. An attacker with low-level privileges and HTTP-based network access can exploit the weakness without user interaction. The CVSS vector indicates a scope change, meaning the impact extends beyond the vulnerable component into adjacent Oracle Hyperion products. Confidentiality is the sole impacted security property, with integrity and availability unaffected. Oracle classifies exploitation as easy, indicating no specialized conditions or elevated access are required to reach the vulnerable code path.
Root Cause
Oracle has not publicly disclosed the underlying defect in the Security component. Based on the CVSS profile and Oracle's advisory description, the weakness allows an authenticated actor to access data outside the intended authorization boundary. This behavior is consistent with a broken access control condition in the Security component of Calculation Manager. Refer to the Oracle Security Alert for vendor-supplied technical context.
Attack Vector
Exploitation occurs over the network using HTTP against the Calculation Manager web interface. The attacker must hold a valid low-privileged account to reach the vulnerable functionality. Once authenticated, the attacker issues crafted requests that traverse the Security component and return data the account should not be able to read. Because the scope changes at exploitation time, the returned data can include information owned or protected by other Oracle Hyperion components sharing the deployment.
No verified proof-of-concept code is publicly available. Detailed exploitation mechanics have not been released by Oracle or third-party researchers.
Detection Methods for CVE-2026-62571
Indicators of Compromise
- Unexpected HTTP requests to Calculation Manager endpoints originating from low-privileged service accounts
- Access log entries showing a single authenticated session retrieving data across multiple Hyperion applications or tenants
- Anomalous data-export volumes tied to non-administrative Hyperion users
Detection Strategies
- Baseline normal request patterns for each Calculation Manager role and alert on deviations, particularly cross-application reads
- Correlate authentication events with subsequent data-access events to identify privilege boundary violations
- Review Oracle Hyperion audit logs for accounts accessing rules, models, or metadata outside their assigned scope
Monitoring Recommendations
- Forward Calculation Manager web server access logs and application audit logs to a centralized analytics platform
- Enable verbose logging on the Security component to capture authorization decisions
- Track HTTP response sizes on Calculation Manager endpoints to identify bulk data retrieval by non-admin users
How to Mitigate CVE-2026-62571
Immediate Actions Required
- Apply the Oracle Critical Patch Update referenced in the Oracle Security Alert for August 2026
- Inventory all Oracle Hyperion Calculation Manager 11.2.25.0.000 deployments and prioritize patching internet-reachable instances
- Audit Calculation Manager user accounts and remove unnecessary low-privileged accounts that could be leveraged for exploitation
Patch Information
Oracle has released fixes as part of its August 2026 Critical Patch Update cycle. Administrators should consult the Oracle Security Alert for the exact patch identifiers, prerequisites, and post-installation validation steps applicable to their Hyperion deployment.
Workarounds
- Restrict network access to Calculation Manager HTTP endpoints using firewall rules or reverse-proxy allowlists
- Enforce strict role-based access control and remove unused Hyperion accounts to reduce the pool of usable low-privileged credentials
- Require multi-factor authentication for all Hyperion access to raise the cost of credential-based exploitation
# Configuration example - restrict Calculation Manager access at the network layer
# Replace with your organization's approved administrative CIDR ranges
iptables -A INPUT -p tcp --dport 19000 -s 10.0.0.0/8 -j ACCEPT
iptables -A INPUT -p tcp --dport 19000 -j DROP
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
