CVE-2026-70957: Oracle Hyperion Auth Bypass Vulnerability

CVE-2026-70957 Overview

CVE-2026-70957 is a high-severity access control vulnerability in the Installation and Configuration component of Oracle Hyperion Infrastructure Technology. The flaw affects supported version 11.2.25.0.000 and is classified under CWE-284 (Improper Access Control). A low-privileged attacker with network access over HTTP can compromise the product without user interaction. Successful exploitation results in unauthorized creation, deletion, or modification of critical data, plus unauthorized read access to all Hyperion Infrastructure Technology accessible data. Oracle disclosed the issue in the Oracle Security Alert CSPUAUG2026.

Critical Impact
An authenticated attacker with low privileges can read and modify all data accessible to Oracle Hyperion Infrastructure Technology over the network.

Affected Products

Oracle Hyperion Infrastructure Technology version 11.2.25.0.000
Component: Installation and Configuration
Oracle Hyperion product family

Discovery Timeline

2026-08-18 - CVE-2026-70957 published to NVD
2026-08-22 - Last updated in NVD database
CSPUAUG2026 - Oracle Security Alert published

Technical Details for CVE-2026-70957

Vulnerability Analysis

The vulnerability resides in the Installation and Configuration component of Oracle Hyperion Infrastructure Technology. Oracle classifies the flaw as easily exploitable over the network using HTTP. An attacker requires only low-level authenticated privileges to reach the vulnerable code path. No user interaction is needed to complete the attack chain.

Successful exploitation grants the attacker broad read and write access to data managed by the platform. This includes unauthorized creation, deletion, or modification of critical records. It also enables unauthorized disclosure of all data accessible to the Hyperion Infrastructure Technology deployment. Availability is not directly impacted, per Oracle's assessment.

Root Cause

The root cause is improper access control (CWE-284) within the Installation and Configuration component. The component fails to correctly enforce authorization checks on HTTP-accessible functionality. As a result, users with low privileges can invoke operations that should be restricted to administrators. Oracle has not released public technical details describing the specific endpoint or configuration handler at fault.

Attack Vector

The attack vector is network-based over HTTP. An attacker authenticates with any low-privileged account on the target Hyperion deployment. The attacker then issues crafted HTTP requests to the affected Installation and Configuration endpoints. Because attack complexity is low and no user interaction is required, exploitation can be automated at scale against exposed instances. See the Oracle Security Alert CSPUAUG2026 for vendor guidance.

No verified proof-of-concept code is publicly available at the time of publication. The vulnerability mechanism is described in prose only; Oracle has not disclosed exploitation details.

Detection Methods for CVE-2026-70957

Indicators of Compromise

Unexpected HTTP requests from low-privileged user accounts targeting Hyperion Installation and Configuration endpoints.
Unusual creation, deletion, or modification events in Hyperion audit logs performed by non-administrative accounts.
Bulk data access or export operations initiated by accounts that historically perform only read-only or limited actions.

Detection Strategies

Review Oracle Hyperion audit logs for privilege-inconsistent operations against configuration components.
Correlate authentication events with subsequent HTTP configuration API calls to identify anomalous session behavior.
Baseline normal administrative activity on Hyperion servers and alert on deviations from that baseline.

Monitoring Recommendations

Enable verbose HTTP request logging on the Hyperion application tier and forward to a centralized log platform.
Monitor for repeated failed and successful access attempts to Installation and Configuration URIs.
Alert on any modification of Hyperion configuration artifacts outside approved change windows.

How to Mitigate CVE-2026-70957

Immediate Actions Required

Apply the fixes referenced in the Oracle Security Alert CSPUAUG2026 to all Oracle Hyperion Infrastructure Technology 11.2.25.0.000 deployments.
Inventory all Hyperion instances and confirm which are internet-exposed or reachable from lower-trust network segments.
Rotate credentials for low-privileged Hyperion accounts and audit account provisioning for stale or unnecessary users.

Patch Information

Oracle addressed CVE-2026-70957 as part of Oracle Security Alert CSPUAUG2026. Administrators should follow the vendor advisory for the specific patch bundle applicable to Oracle Hyperion Infrastructure Technology version 11.2.25.0.000. Refer to the Oracle Security Alert CSPUAUG2026 for download locations and installation instructions.

Workarounds

Restrict network access to Hyperion HTTP endpoints using firewall rules or a reverse proxy limited to trusted management networks.
Enforce least-privilege access reviews to reduce the number of low-privileged accounts that could be leveraged by an attacker.
Place Hyperion administrative interfaces behind a VPN or zero-trust access gateway until patches are fully deployed.

bash

# Configuration example: restrict access to Hyperion HTTP endpoints via iptables
iptables -A INPUT -p tcp --dport 19000 -s 10.10.20.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 19000 -j DROP