CVE-2026-62509: Oracle Hyperion Information Disclosure Flaw

CVE-2026-62509 Overview

CVE-2026-62509 is an information disclosure vulnerability in the Oracle Hyperion Infrastructure Technology product of Oracle Hyperion. The flaw resides in the Common Events component and affects supported version 11.2.25.0.000. An unauthenticated attacker with network access via HTTP can exploit this issue to obtain unauthorized read access to a subset of Oracle Hyperion Infrastructure Technology data. The vulnerability does not impact integrity or availability, only confidentiality. Oracle disclosed the issue in its August 2026 Critical Patch Update advisory.

Critical Impact
Unauthenticated remote attackers can read a subset of data accessible to Oracle Hyperion Infrastructure Technology over HTTP without user interaction.

Affected Products

Oracle Hyperion Infrastructure Technology 11.2.25.0.000
Component: Common Events
Product family: Oracle Hyperion

Discovery Timeline

2026-08-18 - CVE-2026-62509 published to NVD
2026-08-20 - Last updated in NVD database

Technical Details for CVE-2026-62509

Vulnerability Analysis

The vulnerability affects the Common Events component of Oracle Hyperion Infrastructure Technology. This component processes events used by the broader Hyperion Infrastructure Technology stack. According to Oracle's advisory, the flaw is easily exploitable and does not require authentication, user interaction, or elevated privileges. Successful exploitation results in unauthorized read access to a subset of data accessible to the product. The impact is limited to confidentiality; integrity and availability remain intact. Oracle has not published a CWE classification for this issue, and no public proof-of-concept exploit has been observed. The current EPSS probability sits at 0.316%, indicating low near-term exploitation likelihood.

Root Cause

Oracle's advisory does not disclose the internal defect. Based on the impact profile, the root cause is consistent with an information exposure weakness in how the Common Events component authorizes or returns event data over HTTP. See the Oracle Security Alert August 2026 for authoritative details.

Attack Vector

The attack vector is network-based over HTTP. An attacker sends crafted HTTP requests to an exposed Oracle Hyperion Infrastructure Technology instance. No credentials, tokens, or user interaction are required. The scope is unchanged, meaning the disclosure is limited to data within the vulnerable component's authorization boundary. Deployments that expose the Hyperion Infrastructure Technology HTTP interface to untrusted networks face the highest risk.

No verified public exploit code is available. Refer to the vendor advisory for technical remediation guidance.

Detection Methods for CVE-2026-62509

Indicators of Compromise

Unexpected HTTP requests to Oracle Hyperion Infrastructure Technology endpoints from unauthenticated or unusual sources
Anomalous read activity targeting Common Events component URIs
Outbound data transfers correlated with Hyperion HTTP responses larger than baseline

Detection Strategies

Enable HTTP access logging on Oracle Hyperion front-end web tiers and forward logs to a central analytics platform
Baseline normal request patterns to Hyperion endpoints and alert on unauthenticated access spikes
Correlate web server response codes and payload sizes with client identity to detect anonymous data retrieval

Monitoring Recommendations

Monitor perimeter and reverse-proxy logs for unauthenticated requests reaching Hyperion Infrastructure Technology URLs
Track error and success ratios on Common Events endpoints for deviations from baseline
Review Oracle Hyperion audit logs for read operations attributed to anonymous or system contexts

How to Mitigate CVE-2026-62509

Immediate Actions Required

Apply the fix from the Oracle Security Alert August 2026 to all instances running Oracle Hyperion Infrastructure Technology 11.2.25.0.000
Restrict network access to Hyperion HTTP endpoints to trusted management networks only
Inventory all Oracle Hyperion deployments and confirm patch status against the August 2026 CPU

Patch Information

Oracle addressed CVE-2026-62509 in the August 2026 Critical Patch Update. Administrators must apply the patches referenced in the Oracle Security Alert August 2026 for Oracle Hyperion Infrastructure Technology version 11.2.25.0.000. Follow Oracle's documented patch application procedure and validate services after installation.

Workarounds

Place Hyperion Infrastructure Technology behind an authenticating reverse proxy or VPN to block unauthenticated HTTP access
Apply web application firewall rules to deny anonymous access to Common Events endpoints until patching is complete
Segment Hyperion servers from general user networks and limit inbound HTTP to authorized administrative hosts

bash

# Configuration example: restrict Hyperion HTTP access at the reverse proxy (nginx)
location /hyperion/ {
    allow 10.10.20.0/24;   # trusted admin subnet
    deny  all;
    proxy_pass http://hyperion-backend:19000;
}