CVE-2026-83446: Oracle Financials Auth Bypass Vulnerability

CVE-2026-83446 Overview

CVE-2026-83446 is a high-severity vulnerability in the Oracle Financials Common Modules product of Oracle E-Business Suite, specifically within the Common Components component. The flaw affects supported versions 12.2.3 through 12.2.15. A low-privileged attacker with network access via HTTP can exploit the issue without user interaction. Successful exploitation allows unauthorized creation, deletion, or modification of critical data, along with unauthorized read access to all Oracle Financials Common Modules accessible data.

Critical Impact
Authenticated attackers over the network can compromise the confidentiality and integrity of Oracle Financials Common Modules data, including creating, modifying, or deleting critical financial records.

Affected Products

Oracle E-Business Suite — Oracle Financials Common Modules version 12.2.3
Oracle E-Business Suite — Oracle Financials Common Modules versions 12.2.4 through 12.2.14
Oracle E-Business Suite — Oracle Financials Common Modules version 12.2.15

Discovery Timeline

2026-09-15 - CVE-2026-83446 published to NVD
2026-09-16 - Last updated in NVD database

Technical Details for CVE-2026-83446

Vulnerability Analysis

The vulnerability resides in the Common Components of Oracle Financials Common Modules within Oracle E-Business Suite. Oracle classifies the flaw as easily exploitable over the network via HTTP. An attacker only needs low-level authenticated access to the application to reach the vulnerable code path.

Oracle's advisory indicates impact to confidentiality and integrity but not availability. Successful exploitation grants unauthorized read access to all data accessible by the module and permits creating, modifying, or deleting that data. In an enterprise resource planning context, this includes general ledger, payables, receivables, and other core financial records exposed through Common Components.

Root Cause

Oracle has not published root cause details in the public advisory. The Critical Patch Update alert only describes the exploitation preconditions and impact. Because the flaw is reachable by a low-privileged user through HTTP and does not require user interaction, the underlying weakness likely involves inadequate authorization enforcement or input handling within a Common Components endpoint exposed to authenticated users.

Attack Vector

Exploitation requires network access to the Oracle E-Business Suite HTTP interface and a valid low-privileged account. No user interaction is needed, and the attack does not cross a security boundary such as an administrative trust zone. Once authenticated, the attacker issues crafted HTTP requests to the vulnerable Common Components endpoint to read or manipulate financial data outside their intended authorization scope. Refer to the Oracle Security Alert CSPUSEP2026 for authoritative technical details.

No public proof-of-concept code or exploit is available at the time of publication.

Detection Methods for CVE-2026-83446

Indicators of Compromise

Unexpected creation, modification, or deletion of records in Oracle Financials tables performed by low-privileged application accounts.
HTTP requests to Oracle E-Business Suite Common Components URLs originating from user sessions that historically do not access financial modules.
Anomalous data exports or large result-set queries from Financials Common Modules outside normal business hours.

Detection Strategies

Enable Oracle E-Business Suite auditing (FND_LOG_MESSAGES, sign-on audit) and forward events to a centralized analytics platform for correlation.
Baseline typical HTTP request patterns per user role against Financials Common Modules endpoints, and alert on deviations such as new endpoints being reached by non-finance roles.
Review database audit trails for INSERT, UPDATE, and DELETE operations against Financials tables executed by the apps schema on behalf of unusual application users.

Monitoring Recommendations

Ingest Oracle E-Business Suite application, middle-tier (Oracle HTTP Server), and database audit logs into a SIEM or data lake for cross-layer correlation.
Monitor for privilege changes, responsibility grants, and profile option modifications made outside change-management windows.
Track authentication anomalies such as unusual source IPs, session concurrency spikes, or successful logins for dormant accounts that then interact with Financials modules.

How to Mitigate CVE-2026-83446

Immediate Actions Required

Apply the fixes referenced in the Oracle Security Alert CSPUSEP2026 to all Oracle E-Business Suite environments running versions 12.2.3 through 12.2.15.
Inventory all Oracle E-Business Suite instances, including non-production copies, to confirm patch coverage across the estate.
Review recent Financials Common Modules activity logs for signs of unauthorized data access or modification prior to patching.

Patch Information

Oracle addressed CVE-2026-83446 as part of the Critical Security Patch Update CSPUSEP2026. Administrators should consult the Oracle Security Alert CSPUSEP2026 for the exact patch identifiers, prerequisites, and version-specific instructions applicable to Oracle E-Business Suite 12.2.3 through 12.2.15.

Workarounds

Restrict network access to the Oracle E-Business Suite HTTP tier so that only trusted corporate networks and VPN clients can reach the application.
Enforce least-privilege responsibilities in Oracle E-Business Suite and remove Financials access from accounts that do not require it.
Require multi-factor authentication for all Oracle E-Business Suite users to reduce the risk that stolen low-privileged credentials enable exploitation.

bash

# Example: restrict access to Oracle E-Business Suite HTTP tier at the network edge
# Replace addresses with your trusted management and user subnets
iptables -A INPUT -p tcp --dport 8000 -s 10.0.0.0/8 -j ACCEPT
iptables -A INPUT -p tcp --dport 8000 -j DROP