CVE-2026-62446: Oracle Hyperion Info Disclosure Flaw

CVE-2026-62446 Overview

CVE-2026-62446 is an information disclosure vulnerability in the Oracle Hyperion Calculation Manager product of Oracle Hyperion. The flaw resides in the Security component and affects supported version 11.2.25.0.000. An unauthenticated attacker with network access via HTTP can exploit this vulnerability to obtain unauthorized read access to a subset of Oracle Hyperion Calculation Manager accessible data. The issue requires no user interaction and has low attack complexity, making exploitation straightforward for a remote actor. Oracle addressed the flaw in the Oracle Security Alert August 2026.

Critical Impact
Remote, unauthenticated attackers can read a subset of Oracle Hyperion Calculation Manager data over HTTP without credentials or user interaction.

Affected Products

Oracle Hyperion Calculation Manager 11.2.25.0.000
Oracle Hyperion product family (Security component)
Enterprise Performance Management deployments running the affected Calculation Manager build

Discovery Timeline

2026-08-18 - CVE-2026-62446 published to NVD
2026-08-18 - Oracle publishes Security Alert Advisory for August 2026
2026-08-20 - Last updated in NVD database

Technical Details for CVE-2026-62446

Vulnerability Analysis

CVE-2026-62446 is an information disclosure weakness in the Security component of Oracle Hyperion Calculation Manager. The vulnerability allows a remote actor to reach protected data without providing credentials. Successful exploitation results in confidentiality impact only; integrity and availability of the application are not affected.

Because the attack traverses HTTP, any actor that can reach the Calculation Manager web endpoint can attempt exploitation. Enterprise Performance Management systems frequently store financial planning, budgeting, and forecasting data, which raises the business impact of even partial disclosure.

Root Cause

Oracle's advisory attributes the flaw to the Security component of Calculation Manager. The vendor has not published detailed root-cause information, but the CVSS metrics indicate a missing or improper authorization check on a network-exposed request path. The vulnerability permits read access to a bounded subset of application data rather than a full data exfiltration primitive.

Attack Vector

The attack vector is network-based over HTTP. An unauthenticated attacker sends crafted requests to the Calculation Manager service and receives protected data in response. No privileges, tokens, or user interaction are required. This lowers the exploitation bar substantially compared to authenticated information disclosure flaws in the same product family.

No public proof-of-concept, exploit code, or in-the-wild exploitation has been documented at the time of publication. The EPSS score reflects a currently low predicted exploitation probability, but exposure of Calculation Manager to untrusted networks materially increases risk.

Detection Methods for CVE-2026-62446

Indicators of Compromise

Unauthenticated HTTP requests to Calculation Manager endpoints originating from unexpected source addresses
Bursts of anomalous GET requests targeting Security component URIs on the Hyperion web tier
Response payloads containing configuration, user, or metadata fields returned to unauthenticated sessions

Detection Strategies

Review web server and reverse proxy logs for repeated requests to Calculation Manager paths lacking session or authentication headers
Correlate access logs against known administrative source ranges to isolate unauthorized clients
Alert on outbound HTTP responses from Hyperion servers that return non-trivial payload sizes to unauthenticated requests

Monitoring Recommendations

Enable verbose HTTP access logging on the Oracle HTTP Server or load balancer fronting Hyperion
Forward Hyperion application and web-tier logs to a centralized analytics platform for retention and query
Monitor for scanning patterns targeting /calcmgr and adjacent Calculation Manager URIs

How to Mitigate CVE-2026-62446

Immediate Actions Required

Apply the fixes documented in the Oracle Security Alert August 2026 to all instances running Oracle Hyperion Calculation Manager 11.2.25.0.000
Restrict network access to Calculation Manager endpoints so only authorized internal clients can reach the service over HTTP or HTTPS
Audit recent web-tier logs for unauthenticated requests to Calculation Manager paths and preserve evidence for triage

Patch Information

Oracle released remediation as part of the August 2026 Security Alert. Administrators should download the applicable Critical Patch Update from My Oracle Support and apply it against the affected 11.2.25.0.000 deployments. Validate patch application against the version reported by the Hyperion administration console after installation.

Workarounds

Place the Calculation Manager web endpoint behind an authenticated reverse proxy or VPN until patching is complete
Enforce network ACLs that limit HTTP access to Calculation Manager to a defined administrator subnet
Disable external DNS resolution for the Hyperion hostname if the service is only required internally

bash

# Example firewall restriction limiting Calculation Manager access to an admin subnet
iptables -A INPUT -p tcp --dport 8500 -s 10.10.20.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 8500 -j DROP