CVE-2026-62523: Oracle Hyperion Auth Bypass Vulnerability

CVE-2026-62523 Overview

CVE-2026-62523 is an information disclosure vulnerability in Oracle Hyperion Infrastructure Technology, part of the Oracle Hyperion product family. The flaw resides in the Common Security component and affects version 11.2.25.0.000. An unauthenticated attacker with network access via HTTP can exploit this vulnerability, though successful attacks require user interaction from a person other than the attacker. Exploitation can result in unauthorized access to critical data or complete access to all Oracle Hyperion Infrastructure Technology accessible data.

Critical Impact
Successful exploitation grants attackers unauthorized read access to all data accessible by Oracle Hyperion Infrastructure Technology, exposing sensitive financial and business intelligence information.

Affected Products

Oracle Hyperion Infrastructure Technology 11.2.25.0.000
Oracle Hyperion (Common Security component)
Deployments exposing HTTP interfaces to untrusted networks

Discovery Timeline

2026-08-18 - CVE-2026-62523 published to NVD
2026-08-20 - Last updated in NVD database

Technical Details for CVE-2026-62523

Vulnerability Analysis

The vulnerability affects the Common Security component of Oracle Hyperion Infrastructure Technology. It allows an unauthenticated remote attacker to reach the vulnerable HTTP interface without credentials. Successful exploitation depends on human interaction from a user other than the attacker, indicating a likely client-assisted attack pattern such as a crafted link or malicious content rendered in a user session.

The impact is limited to confidentiality. Integrity and availability of the target system remain intact according to the published CVSS vector. The flaw enables full disclosure of data accessible to the Hyperion Infrastructure Technology stack, which in enterprise deployments frequently includes financial reporting, planning data, and consolidated business records.

The EPSS score is 0.268% with a percentile of 19.048, indicating a low observed probability of exploitation activity within the next 30 days. However, Oracle Hyperion is commonly deployed in high-value environments, so risk-based prioritization should not rely solely on EPSS.

Root Cause

Oracle has not published detailed root cause information beyond the classification of the flaw as a Common Security component issue. The requirement for user interaction combined with unauthenticated network access points to weaknesses in how the component handles HTTP requests carrying user-supplied content. Review the Oracle Security Alert August 2026 for authoritative vendor details.

Attack Vector

The attack is delivered over the network via HTTP. The attacker crafts a request or resource that, when interacted with by a legitimate user, causes the Hyperion Infrastructure Technology service to disclose data to the attacker. No authentication or elevated privileges are required on the attacker side. Refer to the Oracle Security Alert August 2026 for vendor-supplied exploitation context.

Detection Methods for CVE-2026-62523

Indicators of Compromise

Unexpected outbound HTTP responses from Hyperion Infrastructure Technology servers containing large volumes of application data.
HTTP access logs showing unauthenticated requests to Common Security endpoints followed by user-session activity from internal users.
Anomalous referrer headers or externally hosted links appearing in Hyperion user browsing sessions.

Detection Strategies

Correlate authentication logs with Common Security endpoint access to identify unauthenticated request patterns preceding data-returning responses.
Deploy web application firewall rules that inspect HTTP requests reaching Oracle Hyperion for unexpected parameters, external references, or embedded content.
Monitor outbound traffic from Hyperion servers for connections to non-corporate destinations following user interactions.

Monitoring Recommendations

Enable verbose HTTP access logging on all Hyperion Infrastructure Technology endpoints and forward logs to a centralized SIEM.
Baseline typical Hyperion HTTP response sizes to detect abnormal data volumes indicative of disclosure.
Track user interaction telemetry, such as email link clicks and browser navigation events, targeting internal Hyperion URLs.

How to Mitigate CVE-2026-62523

Immediate Actions Required

Apply the Oracle Critical Patch Update referenced in the Oracle Security Alert August 2026 to all Hyperion Infrastructure Technology 11.2.25.0.000 deployments.
Restrict network access to Hyperion HTTP interfaces to trusted internal networks and authenticated VPN users only.
Educate users about the risk of clicking untrusted links that reference internal Hyperion URLs.

Patch Information

Oracle addressed CVE-2026-62523 in the August 2026 Critical Patch Update. Administrators should review the Oracle Security Alert August 2026 for the specific patch bundle, prerequisites, and installation instructions for Oracle Hyperion Infrastructure Technology.

Workarounds

Place Hyperion Infrastructure Technology behind a reverse proxy or WAF that filters unauthenticated requests to the Common Security component.
Enforce strict Content Security Policy and referrer controls on browsers accessing Hyperion to reduce the impact of user-interaction-triggered exploitation.
Disable or restrict external link handling within email clients and collaboration tools used by Hyperion administrators.

bash

# Configuration example
# Restrict access to Hyperion Common Security endpoints at the reverse proxy
# Apache httpd example - deny external access, allow only internal subnet
<Location /interop/>
    Require ip 10.0.0.0/8
    Require ip 192.168.0.0/16
</Location>