CVE-2026-71118 Overview
CVE-2026-71118 is a medium-severity vulnerability in the Security component of Oracle Hyperion Financial Management. The flaw affects supported version 11.2.25.0.000 and can be reached remotely over HTTP without authentication. Exploitation is difficult but does not require user interaction. Successful attacks yield unauthorized read access to a subset of application data and unauthorized update, insert, or delete access to some data. Oracle addressed the issue in the August 2026 Critical Patch Update Advisory (Oracle Security Alert CSPUAUG2026). The weakness is categorized under [CWE-284] Improper Access Control.
Critical Impact
An unauthenticated network attacker can modify and read a subset of financial data managed by Oracle Hyperion Financial Management if exploitation conditions are met.
Affected Products
- Oracle Hyperion Financial Management 11.2.25.0.000
- Oracle Hyperion (Security component)
- Deployments exposing Hyperion Financial Management HTTP interfaces to untrusted networks
Discovery Timeline
- 2026-08-18 - CVE-2026-71118 published to NVD
- 2026-08-20 - Last updated in NVD database
Technical Details for CVE-2026-71118
Vulnerability Analysis
The vulnerability resides in the Security component of Oracle Hyperion Financial Management. An unauthenticated attacker with network access over HTTP can interact with the affected functionality without presenting valid credentials. The flaw is classified as Improper Access Control [CWE-284], meaning the application fails to consistently enforce authorization checks on protected operations. Oracle rates the confidentiality and integrity impacts as low, and availability is not affected. Attack complexity is high, indicating the attacker must satisfy specific conditions such as timing, configuration state, or knowledge of internal identifiers before exploitation succeeds.
Root Cause
The root cause is missing or incomplete access control enforcement inside the Hyperion Financial Management Security component. Requests reaching certain endpoints are processed without adequately validating that the caller is authenticated or authorized for the requested operation. This allows a remote actor to influence data read and write paths that should require an authenticated session.
Attack Vector
The attack vector is network-based over HTTP. No privileges and no user interaction are required. The attacker sends crafted HTTP requests to the Hyperion Financial Management application to reach the vulnerable Security component logic. Because the scope is unchanged, impact remains within the vulnerable component. Successful requests can perform unauthorized reads and mutating operations on a subset of application data.
No verified public exploit code is available for CVE-2026-71118. See the Oracle Security Alert CSPUAUG2026 for vendor-provided technical details.
Detection Methods for CVE-2026-71118
Indicators of Compromise
- Unauthenticated HTTP requests to Hyperion Financial Management endpoints originating from unexpected internal or external hosts.
- Unexplained inserts, updates, or deletions in Hyperion Financial Management data tables outside change-management windows.
- Anomalous read patterns against Hyperion data by sessions lacking a valid authenticated user context.
- Web server logs showing repeated probing of Hyperion Security component URLs without corresponding authentication events.
Detection Strategies
- Correlate Hyperion application logs with authentication logs to identify data-access events that lack a preceding successful login.
- Baseline normal HTTP method distribution against Hyperion endpoints and alert on unusual POST, PUT, or DELETE activity.
- Inspect audit trails for changes to financial records performed by service accounts or anonymous contexts.
Monitoring Recommendations
- Forward Hyperion Financial Management access, audit, and application logs to a centralized SIEM or data lake for correlation.
- Enable Oracle Hyperion audit logging for security-relevant events and retain logs for post-incident review.
- Monitor network flows to Hyperion servers and alert when HTTP requests arrive from sources outside authorized administrative ranges.
How to Mitigate CVE-2026-71118
Immediate Actions Required
- Apply the patches from the Oracle Security Alert CSPUAUG2026 to all Oracle Hyperion Financial Management 11.2.25.0.000 instances.
- Inventory Hyperion deployments and confirm patch status through Oracle's Critical Patch Update tooling.
- Restrict network access to Hyperion HTTP interfaces to authorized management networks until patching is complete.
- Review recent audit logs for signs of unauthorized data modification or reads.
Patch Information
Oracle released fixes as part of the August 2026 Critical Patch Update Advisory. Administrators should download and apply the patch bundle referenced in the Oracle Security Alert CSPUAUG2026 for Oracle Hyperion Financial Management version 11.2.25.0.000. Verify patch application by reviewing the OPatch inventory after installation.
Workarounds
- Place Hyperion Financial Management behind a reverse proxy or web application firewall that enforces authentication before requests reach the application.
- Segment Hyperion servers into a restricted VLAN and permit HTTP access only from approved client subnets.
- Disable or block external exposure of Hyperion HTTP endpoints where business requirements do not mandate remote access.
- Increase audit logging verbosity on the Security component to accelerate identification of exploitation attempts.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
