CVE-2026-70952: Oracle Hyperion Auth Bypass Vulnerability

CVE-2026-70952 Overview

CVE-2026-70952 is an access control vulnerability [CWE-284] in the Security component of Oracle Hyperion Financial Management. The affected version is 11.2.25.0.000. An unauthenticated attacker with network access over HTTP can exploit this flaw without user interaction. Successful exploitation grants unauthorized access to all data accessible through Oracle Hyperion Financial Management and can trigger a partial denial of service. Oracle disclosed the issue in the Oracle Security Alert Advisory published in August 2026.

Critical Impact
An unauthenticated remote attacker can read all data reachable through Oracle Hyperion Financial Management and degrade service availability over HTTP.

Affected Products

Oracle Hyperion Financial Management 11.2.25.0.000
Oracle Hyperion (Security component)
Deployments exposing the Financial Management HTTP interface

Discovery Timeline

2026-08-18 - CVE-2026-70952 published to NVD
2026-08-18 - Oracle Security Alert August 2026 released (Oracle Security Alert August 2026)
2026-08-20 - Last updated in NVD database

Technical Details for CVE-2026-70952

Vulnerability Analysis

The flaw resides in the Security component of Oracle Hyperion Financial Management, an enterprise consolidation and financial reporting application. The issue falls under Improper Access Control [CWE-284]. An attacker sends crafted HTTP requests to the exposed Hyperion Financial Management interface. The server processes these requests without enforcing required authentication or authorization checks. This exposes confidential financial data and permits actions that degrade service availability. The vulnerability is remotely exploitable over the network and requires no privileges or user interaction.

Root Cause

The root cause is missing or improperly enforced access controls within the Security component of Oracle Hyperion Financial Management. Authorization decisions do not consistently gate access to protected resources exposed over HTTP. Oracle has not published component-level technical detail beyond the Critical Patch Update advisory.

Attack Vector

Exploitation requires only network reachability to the Hyperion Financial Management HTTP interface. An attacker crafts HTTP requests targeting the Security component and receives unauthorized access to sensitive financial data. The same code path can be abused to cause a partial denial of service. No credentials, tokens, or user interaction are required.

// No verified proof-of-concept code is publicly available for CVE-2026-70952.
// See Oracle Security Alert August 2026 for vendor guidance:
// https://www.oracle.com/security-alerts/cspuaug2026.html

Detection Methods for CVE-2026-70952

Indicators of Compromise

Unauthenticated HTTP requests to Oracle Hyperion Financial Management endpoints returning 200 OK for protected resources.
Anomalous access to financial consolidation data outside of business hours or from unexpected source addresses.
Elevated request volume against Hyperion Financial Management URLs correlated with partial service degradation.

Detection Strategies

Inspect Hyperion Financial Management application logs for requests to Security component paths without a preceding authentication event.
Correlate web application firewall (WAF) telemetry with backend Hyperion logs to surface unauthorized data reads.
Baseline normal user access patterns for Hyperion and alert on outliers in request volume, path frequency, and response sizes.

Monitoring Recommendations

Forward Hyperion Financial Management, IIS or Oracle HTTP Server, and load balancer logs to a centralized analytics platform for retention and correlation.
Monitor for spikes in HTTP 4xx and 5xx responses that may indicate exploitation attempts causing partial denial of service.
Track outbound data volumes from Hyperion application servers to detect bulk exfiltration following unauthorized access.

How to Mitigate CVE-2026-70952

Immediate Actions Required

Apply the fixes referenced in the Oracle Security Alert August 2026 to affected Hyperion Financial Management deployments.
Restrict network access to Hyperion Financial Management HTTP endpoints to trusted management networks and VPN users only.
Audit recent access logs for signs of unauthorized data retrieval predating patch deployment.

Patch Information

Oracle addressed CVE-2026-70952 in the August 2026 Oracle Security Alert. Administrators running Oracle Hyperion Financial Management 11.2.25.0.000 should follow the remediation steps published in the advisory and validate the patch level after deployment. Refer to the Oracle Security Alert August 2026 for the complete list of affected components and fix guidance.

Workarounds

Place Hyperion Financial Management behind a reverse proxy or WAF that enforces authentication before requests reach the application.
Disable or firewall the Hyperion Financial Management HTTP interface where the service is not required.
Enforce network segmentation so only finance operations hosts and jump servers can reach the application.

bash

# Example: restrict Hyperion HFM HTTP access to a trusted subnet using iptables
iptables -A INPUT -p tcp --dport 443 -s 10.20.30.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 443 -j DROP