CVE-2026-61031: Oracle E-Business Suite Auth Bypass Flaw

CVE-2026-61031 Overview

CVE-2026-61031 is a high-severity vulnerability affecting the Oracle Financials Common Country product within Oracle E-Business Suite. The flaw resides in the Internal Operations component and impacts supported versions 12.2.3 through 12.2.15. A low-privileged attacker with network access via HTTP can exploit this issue without user interaction. Successful exploitation allows unauthorized creation, deletion, or modification of critical data, and complete read access to all Oracle Financials Common Country accessible data.

Critical Impact
Authenticated attackers with minimal privileges can compromise the confidentiality and integrity of all data accessible through Oracle Financials Common Country over the network.

Affected Products

Oracle E-Business Suite - Oracle Financials Common Country 12.2.3
Oracle E-Business Suite - Oracle Financials Common Country versions 12.2.4 through 12.2.14
Oracle E-Business Suite - Oracle Financials Common Country 12.2.15

Discovery Timeline

2026-07-21 - CVE CVE-2026-61031 published to NVD
2026-07-21 - Last updated in NVD database
July 2026 - Addressed in the Oracle Critical Patch Update Advisory - July 2026

Technical Details for CVE-2026-61031

Vulnerability Analysis

The vulnerability affects the Internal Operations component of Oracle Financials Common Country, a module within Oracle E-Business Suite that handles country-specific financial processing. An attacker with an authenticated session and low privileges can send crafted HTTP requests to compromise the module. The impact spans both confidentiality and integrity, allowing read and write access to all data reachable through the affected product.

Exploitation does not require user interaction, and the attack complexity is low. Because Oracle E-Business Suite frequently backs financial reporting, tax compliance, and country-specific accounting workflows, unauthorized modification of records can propagate into downstream financial data. The EPSS probability is currently 0.365%, indicating a low probability of exploitation in the near term, though the low complexity warrants prompt remediation.

Root Cause

Oracle has not published detailed root cause information for this issue in the public advisory. Based on the CVSS metrics and impact profile, the flaw permits an authenticated network-based attacker to bypass access restrictions in the Internal Operations subcomponent, leading to unauthorized data access and modification. Full technical details are restricted to Oracle customers with valid support contracts.

Attack Vector

The attack vector is network-based over HTTP. An authenticated attacker with a low-privileged Oracle E-Business Suite account sends crafted requests to the Internal Operations component of Oracle Financials Common Country. No user interaction is required, and the scope is unchanged, meaning exploitation stays within the vulnerable component's security authority.

The vulnerability manifests through the HTTP interface exposed by the E-Business Suite application tier. See the Oracle Security Alert July 2026 for vendor-specific technical guidance available to licensed customers.

Detection Methods for CVE-2026-61031

Indicators of Compromise

Unexpected HTTP requests targeting Oracle Financials Common Country endpoints from low-privileged user sessions.
Anomalous create, update, or delete operations on Financials Common Country tables outside normal business processes.
Authentication events from Oracle E-Business Suite accounts accessing modules outside their typical role scope.
Unusual session duration or request volume against the Internal Operations component.

Detection Strategies

Enable and review Oracle E-Business Suite Sign-On Audit and page access tracking to identify unauthorized module access.
Correlate database audit logs (FND_LOGINS, FND_LOGIN_RESPONSIBILITIES) with HTTP access logs on the application tier.
Baseline normal HTTP request patterns to /OA_HTML/ endpoints and alert on deviations.
Deploy web application firewall rules to flag repeated or malformed requests to Financials Common Country URIs.

Monitoring Recommendations

Forward Oracle E-Business Suite application, database, and web tier logs to a centralized SIEM for correlation.
Monitor privileged data modification events in Financials Common Country schemas for out-of-cycle changes.
Track failed authorization attempts by low-privileged accounts against Internal Operations functions.
Review Oracle Concurrent Manager job history for unexpected submissions tied to Financials Common Country.

How to Mitigate CVE-2026-61031

Immediate Actions Required

Apply the fixes distributed in the Oracle Critical Patch Update - July 2026 to all affected Oracle E-Business Suite instances.
Inventory all Oracle E-Business Suite deployments running versions 12.2.3 through 12.2.15 and prioritize internet-exposed systems.
Review and reduce Oracle E-Business Suite responsibilities and function grants for low-privileged accounts.
Restrict network access to the Oracle E-Business Suite application tier to trusted networks and VPN users.

Patch Information

Oracle addressed CVE-2026-61031 in the July 2026 Critical Patch Update. Customers should download and apply the relevant patch for their Oracle E-Business Suite 12.2.x release from My Oracle Support. Refer to the Oracle Security Alert July 2026 advisory for the complete patch matrix, prerequisites, and post-installation steps.

Workarounds

Oracle strongly recommends applying the Critical Patch Update rather than relying on workarounds for E-Business Suite vulnerabilities.
If patching must be delayed, restrict HTTP access to the Financials Common Country module through URL firewall configuration in context files.
Enforce least privilege on Oracle E-Business Suite responsibilities so users cannot reach Internal Operations functions unnecessarily.
Increase audit logging on the affected module until the patch is deployed.

bash

# Example: apply Oracle E-Business Suite patch using adop (Online Patching)
# Prepare the patch cycle
$ adop phase=prepare

# Apply the July 2026 CPU patch(es) downloaded from My Oracle Support
$ adop phase=apply patches=<CPU_PATCH_NUMBER> workers=8

# Finalize, cutover, and cleanup
$ adop phase=finalize
$ adop phase=cutover
$ adop phase=cleanup