CVE-2026-61037: Oracle Loans Auth Bypass Vulnerability

CVE-2026-61037 Overview

CVE-2026-61037 is a high-severity vulnerability in the Oracle Loans product of Oracle E-Business Suite, within the Internal Operations component. The flaw affects supported versions 12.2.3 through 12.2.15. A low-privileged attacker with HTTP network access can exploit this vulnerability without user interaction. Successful exploitation permits unauthorized creation, deletion, or modification of critical data, and unauthorized read access to all Oracle Loans data. Oracle addressed the issue in the Oracle Security Alert July 2026.

Critical Impact
Authenticated remote attackers can compromise the confidentiality and integrity of all data accessible to Oracle Loans across E-Business Suite deployments.

Affected Products

Oracle E-Business Suite — Oracle Loans, version 12.2.3
Oracle E-Business Suite — Oracle Loans, versions 12.2.4 through 12.2.14
Oracle E-Business Suite — Oracle Loans, version 12.2.15

Discovery Timeline

2026-07-21 - CVE CVE-2026-61037 published to NVD
2026-07-21 - Last updated in NVD database

Technical Details for CVE-2026-61037

Vulnerability Analysis

The vulnerability resides in the Internal Operations component of Oracle Loans, exposed over HTTP within the Oracle E-Business Suite web tier. An authenticated attacker with minimal privileges can send crafted HTTP requests to reach functionality that lacks sufficient authorization enforcement. The flaw is classified as a broken access control issue, allowing operations that should be restricted to privileged roles. Exploitation yields both read and write access to sensitive loan records and configuration data. Availability is not directly impacted, but data integrity across Oracle Loans is fully compromised.

Root Cause

Oracle has not published detailed technical root-cause information beyond the security alert. Based on the CVSS metrics and the affected component, the issue stems from missing or improper authorization checks in HTTP-accessible functionality of the Internal Operations module. Any authenticated E-Business Suite user with network reachability to the application tier can trigger the vulnerable code path.

Attack Vector

The attack vector is network-based over HTTP. An attacker requires valid low-privileged credentials to Oracle E-Business Suite but no elevated role within Oracle Loans. Exploitation does not require user interaction, and attack complexity is low. Because Oracle Loans processes financial data, successful attacks can result in fraudulent loan record creation, modification of repayment terms, or exfiltration of borrower information. See the Oracle Security Alert July 2026 for vendor guidance.

Detection Methods for CVE-2026-61037

Indicators of Compromise

Unexpected HTTP POST or GET requests to Oracle Loans Internal Operations endpoints from user accounts that do not normally interact with loan administration.
Unauthorized creation, modification, or deletion of records in Oracle Loans tables outside of standard business workflows.
Anomalous access patterns from low-privileged E-Business Suite accounts querying loan data in bulk.

Detection Strategies

Review Oracle E-Business Suite audit logs (FND_LOGIN_AUDIT, FND_UNSUCCESSFUL_LOGINS) for authenticated sessions performing Oracle Loans operations outside assigned responsibilities.
Correlate Apache/Weblogic access logs on the E-Business Suite web tier for repeated requests to Loans Internal Operations URLs from a single low-privileged session.
Enable and monitor Oracle database auditing on Loans schema tables to detect DML statements originating from unexpected application sessions.

Monitoring Recommendations

Forward E-Business Suite web tier and database audit logs to a centralized analytics platform for behavior-based analysis.
Baseline normal Oracle Loans usage patterns and alert on deviations in request volume, endpoint distribution, or user role activity.
Track privilege assignments and responsibility changes for accounts that gain access to Oracle Loans functionality.

How to Mitigate CVE-2026-61037

Immediate Actions Required

Apply the July 2026 Oracle Critical Patch Update for E-Business Suite versions 12.2.3 through 12.2.15 without delay.
Inventory all Oracle E-Business Suite deployments and confirm whether the Oracle Loans module is licensed and enabled.
Rotate credentials for any accounts suspected of unauthorized activity against Oracle Loans endpoints.
Review recent Oracle Loans data changes for signs of unauthorized creation, modification, or deletion.

Patch Information

Oracle released fixes for CVE-2026-61037 in the July 2026 Critical Patch Update. Administrators should consult the Oracle Security Alert July 2026 for patch identifiers, prerequisites, and installation guidance. Apply patches to all supported Oracle Loans versions from 12.2.3 through 12.2.15.

Workarounds

Restrict network access to the Oracle E-Business Suite application tier to trusted internal networks and VPN users only.
Enforce least-privilege responsibility assignments and remove Oracle Loans access from users who do not require it.
Place a Web Application Firewall in front of E-Business Suite to filter anomalous requests to Oracle Loans Internal Operations URLs until patching completes.

bash

# Configuration example: restrict access to Oracle Loans URLs at the web tier
# Apache httpd conf snippet on the E-Business Suite web tier
<LocationMatch "/OA_HTML/.*Loan.*">
    Require ip 10.0.0.0/8
    Require ip 192.168.0.0/16
</LocationMatch>