CVE-2026-70788: Oracle Hyperion Financial Reporting SQLi

CVE-2026-70788 Overview

CVE-2026-70788 affects Oracle Hyperion Financial Reporting version 11.2.25.0.000 in the Server component. The vulnerability allows an unauthenticated attacker with network access via HTTP to compromise the application. Successful exploitation grants unauthorized update, insert, or delete access to a subset of application data, plus unauthorized read access to a subset of accessible data. Oracle rates the flaw at CVSS 3.1 base score 6.5, reflecting confidentiality and integrity impact without availability impact. The vulnerability is described by Oracle as easily exploitable and requires no user interaction or prior authentication.

Critical Impact
Unauthenticated network attackers can read, modify, insert, or delete a subset of Oracle Hyperion Financial Reporting data over HTTP.

Affected Products

Oracle Hyperion Financial Reporting 11.2.25.0.000
Oracle Hyperion (Server component)
Deployments exposing Hyperion Financial Reporting HTTP endpoints to untrusted networks

Discovery Timeline

2026-08-18 - CVE-2026-70788 published to NVD
2026-08-20 - Last updated in NVD database
Vendor advisory - Oracle Security Alert

Technical Details for CVE-2026-70788

Vulnerability Analysis

CVE-2026-70788 resides in the Server component of Oracle Hyperion Financial Reporting, an enterprise performance management (EPM) reporting tool used by finance and accounting teams. Oracle's advisory characterizes the flaw as easily exploitable by a remote, unauthenticated attacker over HTTP.

Successful exploitation results in partial impacts to both confidentiality and integrity. Attackers can read a subset of the data accessible to the Hyperion Financial Reporting application. Attackers can also insert, update, or delete a subset of that data. Availability is not impacted, meaning the exploit does not disrupt service uptime.

Because Hyperion Financial Reporting handles financial statements, management reports, and consolidated ledger data, unauthorized modification carries downstream risk for financial reporting integrity, audit trails, and regulatory compliance. Oracle has not published root-cause details in the public advisory.

Root Cause

Oracle has not disclosed the underlying weakness, and no CWE identifier is currently assigned. The advisory language, combined with the network attack vector and lack of authentication, is consistent with a missing authorization or improper access control condition on an HTTP-facing server endpoint. Confirmation requires reviewing the patched binaries from the August 2026 Critical Patch Update.

Attack Vector

The attack vector is network-based over HTTP. No credentials, user interaction, or prior foothold is required. An attacker with reachability to the Hyperion Financial Reporting server can send crafted HTTP requests to trigger unauthorized data read or modification against a subset of application-accessible records.

No verified public proof-of-concept exploit code is available at this time. The EPSS score is 0.281% (percentile 20.693), indicating a low near-term probability of observed exploitation, though this can change once patches are analyzed.

Detection Methods for CVE-2026-70788

Indicators of Compromise

Unauthenticated HTTP requests to Hyperion Financial Reporting server endpoints from unexpected source addresses
Unexplained modifications, insertions, or deletions in Financial Reporting objects, folders, or report metadata
Access log entries showing sensitive report retrieval without an associated authenticated session identifier

Detection Strategies

Correlate web server access logs with application authentication logs to identify HTTP requests that reached protected resources without a valid session
Baseline normal Financial Reporting API and URL patterns, then alert on anomalous verbs (POST, PUT, DELETE) originating from unauthenticated contexts
Monitor database change logs on Hyperion repository tables for write operations that lack a corresponding authenticated application user

Monitoring Recommendations

Forward Hyperion web tier, application tier, and repository database logs into a centralized analytics platform for cross-source correlation
Enable detailed HTTP request logging on the Hyperion Financial Reporting Server, including source IP, URI, method, and response code
Alert on spikes in 2xx responses to normally restricted Financial Reporting paths from external or non-corporate network ranges

How to Mitigate CVE-2026-70788

Immediate Actions Required

Apply the fixes referenced in the Oracle Critical Patch Update Advisory - August 2026 to all affected Hyperion Financial Reporting deployments
Inventory all Oracle Hyperion Financial Reporting 11.2.25.0.000 instances, including test and disaster-recovery environments
Restrict network reachability of the Hyperion Financial Reporting Server to trusted management and user network segments only
Review access and change logs since the CVE publication date for signs of unauthorized data modification

Patch Information

Oracle addressed CVE-2026-70788 as part of the August 2026 Critical Patch Update. Administrators should consult the Oracle Security Alert for exact patch identifiers, prerequisites, and installation instructions applicable to the 11.2.25.0.000 release train. Oracle's standard guidance is to apply Critical Patch Updates without delay because supported fixes are not backported to unsupported versions.

Workarounds

Place the Hyperion Financial Reporting Server behind a reverse proxy or web application firewall that enforces authentication on all inbound HTTP paths
Block direct internet exposure of Hyperion HTTP ports and require VPN or zero-trust network access for user connectivity
Enforce strict egress and ingress access control lists on the Hyperion application tier until the patch is deployed

bash

# Example: restrict inbound HTTP access to the Hyperion Financial Reporting Server
# Replace 10.0.0.0/8 with your trusted corporate CIDR range
iptables -A INPUT -p tcp --dport 8200 -s 10.0.0.0/8 -j ACCEPT
iptables -A INPUT -p tcp --dport 8200 -j DROP