CVE-2026-70752: Oracle Hyperion Auth Bypass Vulnerability

CVE-2026-70752 Overview

CVE-2026-70752 is a high-severity information disclosure vulnerability affecting the Server component of Oracle Hyperion Financial Reporting. The flaw allows an unauthenticated remote attacker with network access via HTTP to compromise the confidentiality of data managed by the application. Successful exploitation can result in unauthorized read access to critical data or complete access to all Oracle Hyperion Financial Reporting accessible data.

The vulnerability affects supported version 11.2.25.0.000 and requires no user interaction. Oracle disclosed the issue in its August 2026 Critical Patch Update Security Alert.

Critical Impact
Unauthenticated attackers can remotely retrieve sensitive financial reporting data over HTTP without any user interaction or prior credentials.

Affected Products

Oracle Hyperion Financial Reporting 11.2.25.0.000
Oracle Hyperion product family (Server component)
Deployments exposing the Hyperion Financial Reporting HTTP interface to untrusted networks

Discovery Timeline

2026-08-18 - CVE-2026-70752 published to the National Vulnerability Database (NVD)
2026-08-20 - Last updated in the NVD database

Technical Details for CVE-2026-70752

Vulnerability Analysis

The vulnerability resides in the Server component of Oracle Hyperion Financial Reporting. An attacker sends crafted HTTP requests to the exposed Hyperion service and receives back data that should require authentication and authorization. The impact is limited to confidentiality, with no direct effect on integrity or availability of the application.

Because Hyperion Financial Reporting stores enterprise financial data including budgets, forecasts, and regulatory reporting artifacts, unauthorized read access carries significant business risk. Oracle rates the flaw as easily exploitable, indicating a low attack complexity and no dependency on privileges or user interaction.

Root Cause

Oracle has not published the underlying defect class in the public advisory. Based on the CVSS metrics and Oracle's characterization, the flaw stems from missing or insufficient authentication or authorization checks on a network-reachable HTTP endpoint of the Hyperion Financial Reporting Server. Refer to the Oracle Security Alert for vendor-supplied details.

Attack Vector

Exploitation occurs remotely over the network via HTTP. The attacker requires no valid Oracle Hyperion account and does not need to trick a user into performing an action. Any adversary able to route TCP traffic to the Hyperion Financial Reporting HTTP listener can attempt the attack, including internal actors on flat networks and external actors when the service is exposed to the internet.

No verified proof-of-concept exploit code is publicly available at the time of publication. Consult the Oracle Security Alert for authoritative technical guidance.

Detection Methods for CVE-2026-70752

Indicators of Compromise

Unexpected HTTP requests to Hyperion Financial Reporting endpoints originating from unauthenticated sessions or unknown source IPs.
Large or unusual outbound HTTP responses from the Hyperion server to external destinations, indicating potential data extraction.
Access log entries showing report or data retrieval activity outside normal business hours or user patterns.

Detection Strategies

Review Hyperion Financial Reporting web server access logs for requests to sensitive report and data endpoints that lack a preceding authenticated session.
Correlate web application firewall (WAF) logs with backend application logs to identify request patterns that bypass authentication middleware.
Baseline normal HTTP request volume and response sizes for the Hyperion server, and alert on statistical deviations.

Monitoring Recommendations

Forward Hyperion Financial Reporting application, web server, and reverse proxy logs to a centralized SIEM for correlation and retention.
Enable network flow monitoring on the Hyperion server subnet to detect scanning, enumeration, and bulk data transfer.
Alert on any successful HTTP 200 responses returning large report payloads to source addresses outside the approved user population.

How to Mitigate CVE-2026-70752

Immediate Actions Required

Apply the fixes referenced in the Oracle August 2026 Critical Patch Update Security Alert as soon as change windows permit.
Inventory all Oracle Hyperion Financial Reporting deployments and confirm the installed version, giving priority to 11.2.25.0.000.
Restrict network reachability of the Hyperion Financial Reporting HTTP service to trusted management and user segments only.

Patch Information

Oracle has issued remediation guidance through its August 2026 Security Alert. Administrators should download and apply the vendor-supplied patch or upgrade following the instructions in the Oracle Security Alert. Validate the patch in a non-production environment before rolling to production Hyperion tiers.

Workarounds

Place the Hyperion Financial Reporting HTTP interface behind a reverse proxy or WAF that enforces authentication before requests reach the application.
Apply network access control lists (ACLs) or firewall rules limiting inbound HTTP traffic to known corporate ranges and VPN concentrators.
Disable or block internet exposure of the Hyperion Financial Reporting Server component until the patch is applied.

bash

# Example: restrict inbound HTTP access to Hyperion Financial Reporting
# Replace 10.0.0.0/8 with your trusted corporate range
iptables -A INPUT -p tcp --dport 19000 -s 10.0.0.0/8 -j ACCEPT
iptables -A INPUT -p tcp --dport 19000 -j DROP