CVE-2026-62461 Overview
CVE-2026-62461 affects the Oracle Hyperion Calculation Manager component of Oracle Hyperion, specifically version 11.2.25.0.000. The vulnerability resides in the Security component and allows an unauthenticated attacker with network access via HTTP to compromise confidentiality. Exploitation is difficult and requires user interaction from a person other than the attacker. Successful attacks can result in unauthorized read access to a subset of Oracle Hyperion Calculation Manager accessible data. Oracle published the vulnerability in the August 2026 Critical Patch Update Security Alert.
Critical Impact
Successful exploitation grants an unauthenticated remote attacker unauthorized read access to a subset of data managed by Oracle Hyperion Calculation Manager, contingent on user interaction.
Affected Products
- Oracle Hyperion Calculation Manager (Oracle Hyperion)
- Affected version: 11.2.25.0.000
- Component: Security
Discovery Timeline
- 2026-08-18 - CVE-2026-62461 published to NVD
- 2026-08-20 - Last updated in NVD database
Technical Details for CVE-2026-62461
Vulnerability Analysis
The vulnerability exists in the Security component of Oracle Hyperion Calculation Manager. The flaw is reachable over the network via HTTP without authentication, but requires specific conditions and user interaction to succeed. Impact is limited to confidentiality; there is no integrity or availability impact. The attack yields partial read access to data accessible by the Calculation Manager service.
The EPSS probability is 0.196% at the 9.641 percentile, indicating low near-term exploitation likelihood. No public proof-of-concept exploit is available, and the vulnerability is not listed in the CISA Known Exploited Vulnerabilities catalog.
Root Cause
Oracle's advisory categorizes the flaw within the Security component of Hyperion Calculation Manager but does not disclose the underlying weakness class. No CWE identifier is assigned in the NVD entry. Details on the specific code path or protocol handler responsible for the disclosure are not published by the vendor.
Attack Vector
An unauthenticated remote attacker crafts an HTTP request targeting the Calculation Manager service. Because the attack complexity is high and user interaction is required, exploitation depends on a legitimate user performing an action such as visiting an attacker-controlled resource or interacting with a specific application flow. See the Oracle Security Alert for vendor guidance.
Detection Methods for CVE-2026-62461
Indicators of Compromise
- Unexpected HTTP requests to Oracle Hyperion Calculation Manager endpoints from external or unusual internal sources.
- Anomalous outbound data flows from the Calculation Manager service host correlating with user-driven interactions.
- Web server access logs showing unauthenticated requests to Calculation Manager URIs followed by user-triggered follow-on requests.
Detection Strategies
- Baseline normal HTTP request patterns to the Calculation Manager service and alert on deviations in request paths, parameters, or user-agent strings.
- Correlate unauthenticated HTTP access with subsequent authenticated user actions that may indicate a social-engineering-driven exploitation chain.
- Review application audit logs for read operations that lack a corresponding legitimate user workflow.
Monitoring Recommendations
- Enable verbose HTTP access logging on the Hyperion Calculation Manager web tier and forward logs to a centralized analytics platform.
- Monitor for repeated failed or malformed requests to Calculation Manager URIs from a single source.
- Track user interaction telemetry (such as referrer chains) that may reveal attacker-hosted content directing users to trigger the exploit.
How to Mitigate CVE-2026-62461
Immediate Actions Required
- Apply the fixes released by Oracle in the August 2026 Critical Patch Update Security Alert as referenced in the Oracle Security Alert.
- Inventory Hyperion Calculation Manager deployments and identify systems running version 11.2.25.0.000.
- Restrict network access to the Calculation Manager HTTP interface to trusted management networks until patching is complete.
Patch Information
Oracle addressed CVE-2026-62461 in the Critical Patch Update Security Alert dated August 2026. Administrators should download and apply the patch package for Oracle Hyperion Calculation Manager version 11.2.25.0.000 from the vendor's My Oracle Support portal, following the guidance in the Oracle Security Alert.
Workarounds
- Place the Calculation Manager web tier behind an authenticated reverse proxy or VPN to reduce unauthenticated exposure.
- Enforce browser-level protections and user awareness training to reduce the likelihood that users will interact with attacker-supplied content.
- Apply web application firewall rules that restrict request patterns to Calculation Manager endpoints to known-good workflows.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
