CVE-2026-83449: Oracle Bills of Material Auth Bypass Flaw

CVE-2026-83449 Overview

CVE-2026-83449 is a vulnerability in the Oracle Bills of Material product of Oracle E-Business Suite, specifically within the Internal Operations 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 to compromise Oracle Bills of Material. The vulnerability includes a scope change, meaning successful exploitation can impact additional products beyond the vulnerable component. Oracle disclosed the issue in the CSPUSEP2026 security alert.

Critical Impact
Successful exploitation grants unauthorized access to critical data or complete access to all Oracle Bills of Material accessible data, along with a partial denial-of-service condition against the product.

Affected Products

Oracle E-Business Suite — Oracle Bills of Material, version 12.2.3
Oracle E-Business Suite — Oracle Bills of Material, versions 12.2.4 through 12.2.14
Oracle E-Business Suite — Oracle Bills of Material, version 12.2.15

Discovery Timeline

2026-09-15 - CVE-2026-83449 published to NVD
2026-09-16 - Last updated in NVD database

Technical Details for CVE-2026-83449

Vulnerability Analysis

The vulnerability resides in the Internal Operations component of Oracle Bills of Material, a module within Oracle E-Business Suite used for manufacturing definition and product structure management. An authenticated attacker with low privileges can send crafted HTTP requests to the vulnerable component. Oracle's advisory categorizes the impact as high confidentiality loss and low availability loss, with a scope change indicating exploitation crosses trust boundaries to affect adjacent products.

The scope change is significant. Even though the flaw exists in Bills of Material, an attacker can pivot the impact into other integrated Oracle E-Business Suite modules. This behavior typically arises when the vulnerable component runs with delegated authority or shares session context across modules.

The EPSS probability is 0.302% as of 2026-09-16, placing exploitation likelihood in the lower percentile band, though this rating can shift once technical details or proofs of concept surface.

Root Cause

Oracle has not published root-cause specifics in the CSPUSEP2026 alert. The exploitability profile — network-reachable, low complexity, low privilege, no user interaction — is consistent with insufficient authorization checks or input handling within an HTTP-accessible interface of the Internal Operations component. Refer to the Oracle Security Alert CSPUSEP2026 for authoritative details.

Attack Vector

An attacker requires network access to the Oracle E-Business Suite HTTP endpoints and a low-privileged authenticated account. Once authenticated, the attacker issues crafted HTTP requests targeting the Internal Operations component of Oracle Bills of Material. The attack does not require user interaction. Because the scope changes, the attacker can affect data or availability in adjacent Oracle E-Business Suite modules that trust the Bills of Material component.

No public exploit code, proof-of-concept, or CISA Known Exploited Vulnerabilities listing has been recorded for this CVE at the time of publication.

Detection Methods for CVE-2026-83449

Indicators of Compromise

Unexpected HTTP requests to Oracle E-Business Suite Bills of Material endpoints originating from low-privileged user sessions.
Anomalous query patterns or bulk data reads against Bills of Material tables outside normal business hours.
Application errors or partial service degradation reported by the Bills of Material module correlating with suspicious HTTP traffic.

Detection Strategies

Enable Oracle E-Business Suite audit logging for the Bills of Material and Internal Operations modules and forward events to a centralized analytics platform.
Baseline typical HTTP request patterns per user role and alert on deviations, especially requests that access data across module boundaries.
Correlate authentication events with unusual data-access volume to identify low-privilege accounts pivoting into higher-value data.

Monitoring Recommendations

Monitor the Oracle HTTP Server access logs for repeated requests to Bills of Material URLs from a single session.
Track Oracle Database audit events for unusual SELECT volume against BOM_* schema objects.
Alert on any application-tier errors accompanied by scope-crossing data access into related Oracle E-Business Suite modules.

How to Mitigate CVE-2026-83449

Immediate Actions Required

Apply the Oracle patch referenced in the CSPUSEP2026 security alert to every Oracle E-Business Suite instance running versions 12.2.3 through 12.2.15.
Inventory all Oracle E-Business Suite environments, including non-production, to confirm patch coverage across the estate.
Review recent access logs for the Bills of Material component to identify potential pre-patch exploitation attempts.
Rotate credentials for low-privileged application accounts if suspicious activity is observed.

Patch Information

Oracle addressed this vulnerability in the Oracle Security Alert CSPUSEP2026. Administrators should follow Oracle's documented patch application process for E-Business Suite 12.2 and validate module functionality after installation.

Workarounds

Restrict HTTP access to Oracle E-Business Suite endpoints through network segmentation and allow-listing until the patch is applied.
Enforce least-privilege role assignments to minimize the number of accounts that can reach the Bills of Material Internal Operations component.
Enable and tune Oracle E-Business Suite Web Application Desktop Integrator and application-tier logging to increase detection fidelity.

bash

# Configuration example
# Refer to the Oracle Security Alert CSPUSEP2026 for authoritative patch guidance:
# https://www.oracle.com/security-alerts/cspusep2026.html