CVE-2026-61327: Oracle E-Business Suite Auth Bypass Flaw

CVE-2026-61327 Overview

CVE-2026-61327 is an improper access control vulnerability [CWE-284] in the Oracle Bills of Material product of Oracle E-Business Suite, specifically within the Internal Operations component. The flaw affects supported versions 12.2.13 through 12.2.15. A low-privileged attacker with network access via HTTP can exploit the weakness without user interaction. Successful exploitation permits unauthorized creation, deletion, or modification of critical data, along with unauthorized read access to all Oracle Bills of Material accessible data.

Critical Impact
An authenticated attacker over HTTP can compromise the confidentiality and integrity of all Oracle Bills of Material data, including unauthorized modification and disclosure of critical business records.

Affected Products

Oracle E-Business Suite - Oracle Bills of Material 12.2.13
Oracle E-Business Suite - Oracle Bills of Material 12.2.14
Oracle E-Business Suite - Oracle Bills of Material 12.2.15

Discovery Timeline

2026-07-21 - CVE-2026-61327 published to NVD
2026-07-22 - Last updated in NVD database

Technical Details for CVE-2026-61327

Vulnerability Analysis

The vulnerability resides in the Internal Operations component of Oracle Bills of Material, a module of Oracle E-Business Suite used to define product structures and manufacturing components. The flaw is categorized under [CWE-284] Improper Access Control, indicating the application does not adequately restrict operations to authorized users. An attacker holding low-level application privileges can issue HTTP requests that reach functionality intended for higher-privileged roles.

Because the exploit path is remote, network-accessible, and requires no user interaction, the vulnerability is well-suited for automated abuse by any account with valid session credentials. The scope remains unchanged, but confidentiality and integrity impacts are rated high. Availability is not affected, which means the attack pattern is data-focused rather than service-disruptive.

An EPSS score of 0.365% currently reflects a low observed likelihood of exploitation, but Oracle E-Business Suite deployments frequently store sensitive engineering, pricing, and manufacturing data that make them attractive targets.

Root Cause

The root cause is missing or insufficient authorization enforcement in HTTP-exposed endpoints of the Internal Operations component. The application trusts request parameters or user context without validating whether the caller has permission to create, read, modify, or delete Bills of Material records.

Attack Vector

Exploitation requires network reachability to the Oracle E-Business Suite web tier and a valid low-privileged application account. The attacker sends crafted HTTP requests to Internal Operations endpoints to invoke privileged actions on Bills of Material records. No local access, elevated permissions, or user interaction is required.

Technical exploitation details are not publicly available. See the Oracle Security Advisory July 2026 for vendor guidance.

Detection Methods for CVE-2026-61327

Indicators of Compromise

Unexpected create, update, or delete operations against Bills of Material tables performed by low-privileged application users.
HTTP requests to Internal Operations endpoints originating from accounts that do not typically interact with manufacturing modules.
Audit log entries showing bulk record modifications outside normal business hours or from unusual source IP addresses.

Detection Strategies

Enable Oracle E-Business Suite auditing on Bills of Material tables and review changes for anomalous account activity.
Correlate application-tier HTTP access logs with database change logs to detect low-privileged accounts driving privileged operations.
Baseline normal Internal Operations request patterns per user role and alert on deviations.

Monitoring Recommendations

Forward Oracle E-Business Suite application, web tier, and database audit logs to a centralized SIEM for correlation.
Monitor for high-volume record modifications or reads against BOM_* tables by any single session.
Alert on newly created Bills of Material records with references to unusual items, cost centers, or organizations.

How to Mitigate CVE-2026-61327

Immediate Actions Required

Apply the July 2026 Oracle Critical Patch Update to all Oracle E-Business Suite environments running Bills of Material versions 12.2.13 through 12.2.15.
Inventory all Oracle E-Business Suite instances and confirm patch status against the vendor advisory.
Review Bills of Material role assignments and revoke unnecessary access from low-privileged accounts.

Patch Information

Oracle addressed CVE-2026-61327 in the July 2026 Critical Patch Update. Administrators should apply the fixes referenced in the Oracle Security Advisory July 2026 using standard Oracle E-Business Suite patching procedures.

Workarounds

Restrict network access to Oracle E-Business Suite web tiers so that only trusted internal networks or VPN clients can reach Internal Operations endpoints.
Enforce strong authentication and periodic credential rotation for all Oracle E-Business Suite application users.
Review and tighten responsibilities and menu exclusions for accounts that do not require Bills of Material access until patching is complete.

bash

# Configuration example
# Refer to the Oracle Security Advisory July 2026 for authoritative patch
# application steps. General workflow for Oracle E-Business Suite 12.2:
#   1. Download the July 2026 CPU patch for EBS from My Oracle Support.
#   2. Apply the patch using adop in a prepared filesystem:
#        adop phase=prepare
#        adop phase=apply patches=<patch_number>
#        adop phase=finalize,cutover,cleanup
#   3. Validate Bills of Material access controls post-patch.