CVE-2026-87192: Oracle Hyperion Auth Bypass Vulnerability

CVE-2026-87192 Overview

CVE-2026-87192 is a vulnerability in the Security component of Oracle Hyperion Financial Management. The affected version is 11.2.26.0.000. An attacker with low privileges and network access via HTTP can exploit the flaw to compromise the application. Successful exploitation results in unauthorized access to critical or all data accessible by Oracle Hyperion Financial Management, and the ability to cause a partial denial of service. Oracle addressed the issue in the Oracle Security Alert CSPUSEP2026.

Critical Impact
A low-privileged authenticated attacker can read sensitive financial data over the network and degrade service availability without user interaction.

Affected Products

Oracle Hyperion Financial Management 11.2.26.0.000
Oracle Hyperion product family (Security component)
Deployments of Hyperion Financial Management exposed over HTTP

Discovery Timeline

2026-09-15 - CVE-2026-87192 published to NVD
2026-09-16 - Last updated in NVD database

Technical Details for CVE-2026-87192

Vulnerability Analysis

The vulnerability resides in the Security component of Oracle Hyperion Financial Management, an enterprise consolidation and reporting platform. The flaw allows a low-privileged authenticated user to bypass intended access controls over HTTP. Once exploited, the attacker gains unauthorized read access to data that should be restricted, including financial records and configuration data.

The issue also enables partial denial of service against the Hyperion Financial Management service. Integrity of stored data is not directly affected, but confidentiality and availability are impacted. Because the attack traverses the network without user interaction, exposure grows for internet-facing or loosely segmented deployments.

The EPSS probability score is 0.302%, reflecting current exploitation likelihood rather than technical severity. No public proof-of-concept exploit is available at the time of publication, and the vulnerability is not listed in the CISA Known Exploited Vulnerabilities catalog.

Root Cause

Oracle has not publicly disclosed low-level technical details of the flaw beyond attributing it to the Security component of Hyperion Financial Management. Based on Oracle's advisory, the weakness allows a user with valid low-privilege credentials to reach protected data paths, consistent with a broken access control or authorization bypass condition.

Attack Vector

Exploitation requires network reachability to the Hyperion Financial Management HTTP interface and valid low-privilege credentials. The attack complexity is low and no user interaction is required. An attacker sends crafted HTTP requests to the Security component to retrieve unauthorized data or trigger resource conditions that degrade availability.

No verified code examples or public proof-of-concept exploits are available. Refer to the Oracle Security Alert CSPUSEP2026 for vendor-supplied technical details.

Detection Methods for CVE-2026-87192

Indicators of Compromise

Unexpected HTTP requests to Hyperion Financial Management Security endpoints from low-privileged accounts
Authenticated sessions accessing datasets or entities outside the user's assigned scope
Repeated authorization failures followed by successful data-retrieval responses
Service slowdowns or timeouts on Hyperion Financial Management application servers

Detection Strategies

Audit Hyperion Financial Management application logs for access patterns that cross user role boundaries.
Correlate web server logs with identity provider events to identify low-privilege accounts issuing high-volume queries.
Baseline normal HTTP request rates against the Security component and alert on statistically significant deviations.

Monitoring Recommendations

Forward Hyperion application and IIS or web-tier logs to a centralized SIEM for long-term analysis.
Monitor authentication and session events for accounts exhibiting sudden scope expansion.
Track availability metrics on Hyperion Financial Management services and alert on partial DoS symptoms.

How to Mitigate CVE-2026-87192

Immediate Actions Required

Apply the patch referenced in the Oracle Security Alert CSPUSEP2026 to all affected Hyperion Financial Management instances.
Inventory Hyperion Financial Management deployments and confirm which are running version 11.2.26.0.000.
Restrict network access to Hyperion HTTP endpoints so that only authorized internal users and jump hosts can reach them.
Review and reduce Hyperion account privileges, removing dormant or unnecessary low-privilege accounts.

Patch Information

Oracle published fix guidance in the Oracle Security Alert CSPUSEP2026. Administrators should follow Oracle's patching instructions specific to Hyperion Financial Management 11.2.26.0.000 and validate application functionality after deployment.

Workarounds

Place Hyperion Financial Management behind a reverse proxy or web application firewall that enforces authentication and rate limiting.
Enforce network segmentation so the Hyperion application tier is not reachable from general user networks or the internet.
Require multi-factor authentication for all Hyperion Financial Management user accounts, including low-privilege roles.
Increase logging verbosity on the Security component until the vendor patch is applied and validated.

bash

# Configuration example: restrict inbound HTTP access to Hyperion FM to a trusted management subnet
iptables -A INPUT -p tcp --dport 443 -s 10.10.20.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 443 -j DROP