CVE-2026-101767: Oracle E-Business Suite Auth Bypass

CVE-2026-101767 Overview

CVE-2026-101767 is an authentication-related vulnerability [CWE-287] in the Oracle Application Object Library (AOL) component of Oracle E-Business Suite. The flaw affects supported versions 12.2.3 through 12.2.15. An unauthenticated attacker with network access over HTTP can exploit the issue without user interaction. Successful exploitation results in complete takeover of Oracle Application Object Library, compromising confidentiality, integrity, and availability. Oracle disclosed the vulnerability as part of the October 2026 Critical Patch Update.

Critical Impact
Remote, unauthenticated attackers can take over Oracle Application Object Library instances through HTTP, gaining full control of a core E-Business Suite component.

Affected Products

Oracle E-Business Suite — Oracle Application Object Library 12.2.3
Oracle E-Business Suite — Oracle Application Object Library versions 12.2.4 through 12.2.14
Oracle E-Business Suite — Oracle Application Object Library 12.2.15

Discovery Timeline

2026-10-20 - CVE-2026-101767 published to the National Vulnerability Database
2026-10-21 - Last updated in NVD database

Technical Details for CVE-2026-101767

Vulnerability Analysis

The vulnerability resides in the Core component of Oracle Application Object Library, the foundational framework underpinning Oracle E-Business Suite modules. Oracle classifies the issue as easily exploitable over HTTP without authentication or user interaction. A single network request to an exposed E-Business Suite endpoint is sufficient to compromise the component. Because the Application Object Library handles session management, menus, concurrent processing, and user profiles, a takeover grants broad control over the surrounding E-Business Suite environment. Oracle has not released public technical details beyond the October 2026 Critical Patch Update advisory.

Root Cause

The weakness maps to CWE-287 (Improper Authentication). An attacker reaches a sensitive code path without presenting valid credentials, allowing the request to be processed with elevated trust. Oracle's advisory does not disclose the specific authentication control that fails or the exact entry point. The affected code is reachable in default deployments of Oracle E-Business Suite 12.2.x.

Attack Vector

Exploitation requires only network reachability to the HTTP service hosting Oracle E-Business Suite. The attacker does not need valid user credentials, prior session state, or interaction from a legitimate user. Internet-exposed E-Business Suite deployments face the highest risk, but internal segments remain vulnerable to lateral movement from any pivot host that can reach the application tier. Successful exploitation yields full compromise of the Oracle Application Object Library, which can be leveraged to pivot across integrated modules and underlying data.

No public proof-of-concept exploit code has been released at the time of publication, and no verified technical artifacts are available to document inline. Refer to the Oracle Security Alerts - October 2026 advisory for vendor guidance.

Detection Methods for CVE-2026-101767

Indicators of Compromise

Unauthenticated HTTP or HTTPS requests to Oracle E-Business Suite endpoints originating from unexpected source addresses.
Creation of new Application Object Library users, responsibilities, or concurrent program definitions outside change-control windows.
Anomalous FND_* table modifications or unexpected entries in Oracle E-Business Suite audit logs.
Outbound connections from the application tier to unfamiliar destinations following inbound HTTP activity.

Detection Strategies

Compare current Oracle E-Business Suite patch inventory against the October 2026 Critical Patch Update baseline to confirm exposure.
Inspect web tier access logs for requests to AOL-related URLs that return success codes without preceding authentication cookies.
Alert on privilege or role assignments performed by the GUEST user or anonymous sessions.

Monitoring Recommendations

Forward Oracle HTTP Server, WebLogic, and database audit logs to a centralized analytics platform for correlation.
Track application tier process creation and file writes under the Oracle application user context.
Monitor egress traffic from the E-Business Suite application tier for new outbound destinations.

How to Mitigate CVE-2026-101767

Immediate Actions Required

Apply the October 2026 Oracle Critical Patch Update for Oracle E-Business Suite as the primary remediation.
Remove direct internet exposure of E-Business Suite endpoints and place them behind a reverse proxy or VPN until patched.
Review Oracle Application Object Library user, responsibility, and profile changes made since the publication date for signs of abuse.

Patch Information

Oracle has released fixes as part of the October 2026 Critical Patch Update. Administrators should follow the vendor advisory and apply the referenced patches for Oracle E-Business Suite versions 12.2.3 through 12.2.15. Refer to the Oracle Security Alerts - October 2026 bulletin for component-specific patch identifiers and installation prerequisites.

Workarounds

Restrict HTTP and HTTPS access to the E-Business Suite application tier using network ACLs or a web application firewall.
Enforce strict allowlists on the reverse proxy for authenticated URL paths while blocking unauthenticated access to AOL endpoints.
Enable additional logging on Oracle HTTP Server and the application database to retain forensic evidence during the patching window.

bash

# Example: restrict inbound HTTP access to Oracle E-Business Suite tier
# Replace <trusted_cidr> with your administrative network range
iptables -A INPUT -p tcp --dport 8000 -s <trusted_cidr> -j ACCEPT
iptables -A INPUT -p tcp --dport 8000 -j DROP
iptables -A INPUT -p tcp --dport 443  -s <trusted_cidr> -j ACCEPT
iptables -A INPUT -p tcp --dport 443  -j DROP