CVE-2026-101823: Oracle Bills of Material Auth Bypass

CVE-2026-101823 Overview

CVE-2026-101823 affects the Oracle Bills of Material product within Oracle E-Business Suite, specifically the Internal Operations component. The flaw allows a low-privileged attacker with network access over HTTP to compromise the application. Successful exploitation results in full takeover of Oracle Bills of Material, impacting confidentiality, integrity, and availability. The weakness is categorized under CWE-284: Improper Access Control. Oracle disclosed the issue as part of the October 2026 Critical Patch Update cycle.

Critical Impact
An authenticated attacker reachable over the network can take over Oracle Bills of Material, exposing manufacturing bill-of-materials data and disrupting operations.

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

2026-10-20 - CVE-2026-101823 published to NVD
2026-10-22 - Last updated in NVD database

Technical Details for CVE-2026-101823

Vulnerability Analysis

The vulnerability resides in the Internal Operations component of Oracle Bills of Material. An attacker with low privileges and HTTP access to the E-Business Suite instance can abuse improper access control to escalate access within the module. Oracle rates the attack complexity as high, indicating that successful exploitation depends on specific conditions outside the attacker's direct control. When those conditions align, the attacker gains full control over the Bills of Material product, including the ability to read, modify, and disrupt its data.

Oracle Bills of Material manages manufacturing structure definitions, including components, routings, and item relationships. Takeover of this module can cascade into downstream production planning, costing, and inventory processes that rely on bill-of-materials integrity.

Root Cause

The weakness maps to CWE-284: Improper Access Control. Oracle has not published detailed technical analysis beyond the advisory. The condition allows a user holding a valid low-privilege session to perform actions reserved for higher-privileged roles within the Internal Operations surface.

Attack Vector

Exploitation requires network reachability to the Oracle E-Business Suite HTTP endpoint and authenticated access with low privileges. No user interaction is required. The scope remains unchanged, meaning the impact is contained within the vulnerable component rather than crossing a security boundary into other Oracle modules.

No public proof-of-concept or exploit code is available for CVE-2026-101823. Refer to the Oracle Security Alert October 2026 for vendor technical guidance.

Detection Methods for CVE-2026-101823

Indicators of Compromise

Unexpected modifications to bill-of-materials records, routings, or component relationships originating from low-privileged accounts.
HTTP requests to Oracle Bills of Material Internal Operations endpoints that deviate from documented user workflows.
New or unexplained administrative actions performed from standard user sessions in the E-Business Suite audit trail.

Detection Strategies

Enable Oracle E-Business Suite auditing (FND_LOG_MESSAGES, Sign-On Audit) on Bills of Material modules and review for privilege anomalies.
Correlate web-tier access logs with application-tier user sessions to identify requests that exceed the invoking user's responsibilities.
Baseline normal Bills of Material transaction patterns and alert on deviations in volume, timing, or source IP.

Monitoring Recommendations

Forward E-Business Suite application, database, and web-tier logs to a central analytics platform for correlation and retention.
Monitor privileged function invocations within the Internal Operations component for use by accounts lacking the corresponding responsibility assignment.
Alert on configuration or role assignment changes to Oracle Bills of Material outside of change windows.

How to Mitigate CVE-2026-101823

Immediate Actions Required

Apply the Oracle October 2026 Critical Patch Update to all Oracle E-Business Suite instances running Bills of Material versions 12.2.3 through 12.2.15.
Inventory accounts with access to Oracle Bills of Material and remove responsibilities that are no longer required.
Restrict network reachability to the E-Business Suite HTTP tier to trusted corporate networks and VPN ranges.

Patch Information

Oracle addressed CVE-2026-101823 in the October 2026 Critical Patch Update. Patch details, affected products, and installation guidance are available in the Oracle Security Alert October 2026. Oracle recommends applying Critical Patch Update fixes without delay.

Workarounds

Place the E-Business Suite environment behind a web application firewall and restrict access to Internal Operations URLs where feasible.
Enforce multi-factor authentication on all E-Business Suite accounts to reduce the risk of low-privilege credential compromise.
Increase audit retention and review frequency for Bills of Material activity until patches are deployed across all instances.

bash

# Example: restrict HTTP access to the E-Business Suite tier at the firewall
# Replace EBS_HOST and TRUSTED_CIDR with environment-specific values
iptables -A INPUT -p tcp -s TRUSTED_CIDR -d EBS_HOST --dport 8000 -j ACCEPT
iptables -A INPUT -p tcp -d EBS_HOST --dport 8000 -j DROP