CVE-2026-101696: Oracle E-Business Suite Auth Bypass Flaw

CVE-2026-101696 Overview

CVE-2026-101696 is an access control weakness [CWE-284] in the Oracle Application Object Library component of Oracle E-Business Suite. The flaw affects supported versions 12.2.3 through 12.2.15 and is exploitable over HTTP by an unauthenticated attacker. Exploitation requires user interaction from a victim other than the attacker, which raises the attack complexity. Successful exploitation allows unauthorized creation, deletion, or modification of data accessible to the Oracle Application Object Library, along with full read access to that data.

Critical Impact
An unauthenticated network attacker who can trick a user into interacting with a crafted HTTP request can achieve high-impact read and write access across Oracle Application Object Library data.

Affected Products

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

Discovery Timeline

2026-10-20 - CVE-2026-101696 published to the National Vulnerability Database
2026-10-22 - Last updated in NVD database
Vendor advisory: Oracle Security Alert October 2026

Technical Details for CVE-2026-101696

Vulnerability Analysis

The vulnerability resides in the Core component of Oracle Application Object Library (FND), the shared services layer underlying Oracle E-Business Suite applications. Oracle Application Object Library handles menus, responsibilities, concurrent processing, and session data for E-Business Suite modules. The weakness is categorized as improper access control [CWE-284], meaning the component fails to adequately restrict an action performed over an HTTP request path.

An attacker without credentials can reach the vulnerable code path over the network. Exploitation requires a legitimate user to interact with attacker-supplied content, consistent with a client-assisted request pattern. Once the victim interacts, the attacker gains read and write access to data governed by the Oracle Application Object Library, which can include user profiles, responsibilities, menus, and application metadata used across E-Business Suite modules.

Root Cause

Oracle has not published root-cause specifics. The CWE-284 classification indicates that an operation reachable through the Oracle Application Object Library HTTP surface does not enforce the authorization or validation required for the sensitivity of the data being accessed. See the Oracle Security Alert October 2026 for vendor details.

Attack Vector

The attack originates over HTTP and requires no attacker credentials. The attacker must induce a user, typically an authenticated E-Business Suite user, to interact with crafted content such as a malicious link or page. The user interaction channels the attacker's request into an authenticated session context, after which the access control flaw permits unauthorized reads and writes to Oracle Application Object Library data. No verified public exploit code is available at the time of writing.

Detection Methods for CVE-2026-101696

Indicators of Compromise

Unexpected modifications to Oracle Application Object Library tables such as FND_USER, FND_RESPONSIBILITY, FND_MENUS, or FND_PROFILE_OPTION_VALUES.
HTTP requests to E-Business Suite OA.jsp, OAFunctionBranchJSP, or FND servlet endpoints that carry anomalous Referer headers pointing to external domains.
Session activity where an authenticated user performs sensitive administrative actions within seconds of clicking an external link.

Detection Strategies

Correlate E-Business Suite application tier access logs with database audit records on FND_* tables to identify writes that lack a corresponding legitimate workflow.
Hunt for cross-site request patterns targeting Oracle Application Object Library URIs, particularly requests missing or carrying forged anti-CSRF tokens.
Baseline normal responsibility and user-profile change rates, then alert on deviations outside standard change windows.

Monitoring Recommendations

Enable Oracle Database fine-grained auditing on Oracle Application Object Library tables that store authorization and configuration data.
Forward HTTP access logs from the Oracle HTTP Server tier into a SIEM with retention sufficient to investigate delayed interaction-based attacks.
Monitor concurrent program submissions and privileged responsibility assignments for after-hours activity.

How to Mitigate CVE-2026-101696

Immediate Actions Required

Apply the October 2026 Oracle Critical Patch Update for Oracle E-Business Suite 12.2.3 through 12.2.15 as published in the Oracle Security Alert October 2026.
Inventory all E-Business Suite environments, including non-production clones, and prioritize patching internet-exposed instances first.
Audit recent changes to FND_USER, FND_RESPONSIBILITY, and related tables to validate they match approved change tickets.

Patch Information

Oracle addresses CVE-2026-101696 in the October 2026 Critical Patch Update. Administrators should download the applicable patch for Oracle E-Business Suite Oracle Application Object Library versions 12.2.3 through 12.2.15 and apply it following the Oracle E-Business Suite patching procedure. Validate patch application in a lower environment before promoting to production.

Workarounds

Restrict HTTP access to the E-Business Suite application tier using network segmentation, VPN, or an authenticated reverse proxy until patching completes.
Enforce browser isolation or strict referrer policies for users with privileged E-Business Suite responsibilities to reduce the likelihood of successful user-interaction attacks.
Enable and enforce E-Business Suite anti-CSRF features and ensure the s_trusted_source_ip and allowed-redirect configurations are tightly scoped.

bash

# Example: apply the October 2026 CPU patch to E-Business Suite
# Replace <PATCH_NUMBER> with the Oracle-supplied patch identifier
source $APPL_TOP/APPS<CONTEXT>.env
adop phase=prepare
adop phase=apply patches=<PATCH_NUMBER>
adop phase=finalize
adop phase=cutover
adop phase=cleanup