CVE-2026-83123: Oracle Report Manager Auth Bypass Vulnerability

CVE-2026-83123 Overview

CVE-2026-83123 is an access control weakness in the Oracle Report Manager 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 network access over HTTPS can exploit the issue without user interaction to gain unauthorized access to Oracle Report Manager data. Successful exploitation results in disclosure of all data accessible to Oracle Report Manager and a partial denial of service against the product. The root cause is categorized as improper access control [CWE-284].

Critical Impact
An authenticated attacker on the network can read all Oracle Report Manager data and cause a partial denial of service without any user interaction.

Affected Products

Oracle E-Business Suite — Oracle Report Manager 12.2.3
Oracle E-Business Suite — Oracle Report Manager versions 12.2.4 through 12.2.14
Oracle E-Business Suite — Oracle Report Manager 12.2.15

Discovery Timeline

2026-09-15 - CVE-2026-83123 published to NVD
2026-09-16 - Last updated in NVD database

Technical Details for CVE-2026-83123

Vulnerability Analysis

CVE-2026-83123 resides in the Internal Operations component of Oracle Report Manager, a reporting module within Oracle E-Business Suite. The vulnerability allows a low-privileged authenticated user to reach functionality or data that should require higher privileges. Because the attack executes over the network via HTTPS and does not require user interaction, it can be scripted and reused across accessible instances.

The primary consequence is unauthorized disclosure of data managed by Oracle Report Manager. A secondary consequence is a partial denial of service that degrades the availability of the reporting product without necessarily impacting the wider Oracle E-Business Suite deployment. Integrity is not impacted.

Root Cause

The issue is classified under [CWE-284: Improper Access Control]. The Report Manager component fails to sufficiently enforce authorization checks on requests originating from low-privileged authenticated sessions. As a result, actions or data reads that should be restricted by role or privilege are reachable by any authenticated user with network access to the application.

Attack Vector

Exploitation requires network reachability to the Oracle E-Business Suite HTTPS endpoint hosting Oracle Report Manager and any valid low-privileged account. The attacker issues crafted HTTPS requests to Report Manager endpoints that lack sufficient authorization enforcement. No user interaction is required, no privilege escalation prerequisite is needed beyond an authenticated session, and the scope of the vulnerability is unchanged. Refer to the Oracle Security Alert for technical details.

No public proof-of-concept exploit is currently available, and the vulnerability is not listed in the CISA Known Exploited Vulnerabilities catalog.

Detection Methods for CVE-2026-83123

Indicators of Compromise

Unexpected HTTPS requests to Oracle Report Manager Internal Operations endpoints originating from low-privileged user sessions.
Anomalous volumes of report data retrieval requests correlated with a single authenticated session or source IP.
Application-tier errors or performance degradation limited to Oracle Report Manager, consistent with the partial denial of service impact.

Detection Strategies

Review Oracle E-Business Suite access logs for requests to Report Manager URLs made by accounts that do not normally interact with reporting functions.
Correlate authenticated session identifiers with the roles assigned in Oracle E-Business Suite to identify privilege mismatches between the account and the resources accessed.
Baseline normal Report Manager usage per user role and alert on deviations in request paths, parameters, or data volumes returned.

Monitoring Recommendations

Forward Oracle E-Business Suite application logs, HTTP server logs, and database audit records to a central analytics platform for correlation.
Enable Oracle database fine-grained auditing on tables accessed by Oracle Report Manager to record unexpected reads.
Monitor availability metrics for the Report Manager service to identify partial denial of service conditions early.

How to Mitigate CVE-2026-83123

Immediate Actions Required

Apply the Oracle Critical Patch Update referenced in the Oracle Security Alert to any Oracle E-Business Suite deployment running Report Manager versions 12.2.3 through 12.2.15.
Inventory Oracle E-Business Suite environments to confirm which instances expose Oracle Report Manager and prioritize internet-facing or partner-accessible systems.
Audit low-privileged accounts with access to the Oracle E-Business Suite HTTPS endpoints and disable or rotate credentials for accounts that are unused or shared.

Patch Information

Oracle addresses CVE-2026-83123 in its Critical Patch Update. Administrators should consult the Oracle Security Alert for the specific patch identifiers, prerequisite bundles, and post-installation steps applicable to their Oracle E-Business Suite release. Patches must be applied through the standard Oracle E-Business Suite adop online patching workflow on 12.2.x deployments.

Workarounds

Restrict network access to Oracle Report Manager endpoints using web application firewall rules or reverse proxy allow-lists until patches are deployed.
Remove Oracle Report Manager responsibilities from user roles that do not require reporting access to reduce the population of accounts capable of authenticating to the component.
Enforce multi-factor authentication on all Oracle E-Business Suite accounts to raise the cost of obtaining the low-privileged access required for exploitation.

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# Configuration example: consult the Oracle Security Alert for authoritative patch commands
# https://www.oracle.com/security-alerts/cspusep2026.html