CVE-2026-101699: Oracle One-to-One Fulfillment Auth Bypass

CVE-2026-101699 Overview

CVE-2026-101699 is an access control vulnerability [CWE-284] in the Oracle One-to-One Fulfillment product of Oracle E-Business Suite. The flaw resides in the Documents component and affects supported versions 12.2.3 through 12.2.15. A low-privileged attacker with network access over HTTP can exploit the issue to compromise the Oracle One-to-One Fulfillment application. Successful exploitation results in takeover of the component with impacts to confidentiality, integrity, and availability. Oracle addressed the issue in the October 2026 Critical Patch Update.

Critical Impact
Successful exploitation enables full takeover of Oracle One-to-One Fulfillment, exposing fulfillment documents and workflow integrity across E-Business Suite deployments.

Affected Products

Oracle E-Business Suite — Oracle One-to-One Fulfillment 12.2.3
Oracle E-Business Suite — Oracle One-to-One Fulfillment versions 12.2.4 through 12.2.14
Oracle E-Business Suite — Oracle One-to-One Fulfillment 12.2.15

Discovery Timeline

2026-10-20 - CVE-2026-101699 published to NVD alongside the Oracle October 2026 Critical Patch Update
2026-10-22 - Last updated in NVD database

Technical Details for CVE-2026-101699

Vulnerability Analysis

The vulnerability sits in the Documents component of Oracle One-to-One Fulfillment, a module used to manage personalized customer communications within Oracle E-Business Suite. Oracle classifies the issue as difficult to exploit, meaning the attacker must satisfy conditions beyond their direct control. However, the attacker only needs low-level authenticated access and network reachability over HTTP. Successful exploitation yields complete takeover of the One-to-One Fulfillment component, which disrupts document generation workflows and exposes customer communication data.

Root Cause

The weakness is categorized under CWE-284 (Improper Access Control). The Documents component fails to enforce sufficient authorization checks on operations exposed through its HTTP interface. An authenticated user with limited privileges can reach functionality that should be restricted, which allows them to escalate control over the component.

Attack Vector

Exploitation requires network access to the Oracle E-Business Suite HTTP endpoints and valid low-privileged credentials. The attacker interacts with the Documents component through standard web traffic, bypassing the access control boundaries that are intended to isolate privileged operations. No user interaction is required, and the attack scope remains unchanged within the vulnerable component.

No public proof-of-concept code is available. Refer to the Oracle Security Alert October 2026 for vendor-supplied technical details.

Detection Methods for CVE-2026-101699

Indicators of Compromise

Unexpected HTTP requests from low-privileged user sessions targeting Oracle One-to-One Fulfillment Documents endpoints under /OA_HTML/ paths.
Creation or modification of fulfillment documents and templates by accounts that do not normally perform administrative actions on the module.
Anomalous session behavior where a standard EBS user issues administrative or configuration calls to the Documents component.

Detection Strategies

Review Oracle E-Business Suite application tier access logs for repeated or malformed requests to IEM, IEU, and One-to-One Fulfillment URIs originating from non-privileged accounts.
Correlate database audit records for the IEU and JTF schemas against application user context to identify privilege boundary violations.
Baseline normal document creation volume per user and alert on deviations that indicate automated or unauthorized activity.

Monitoring Recommendations

Enable Oracle E-Business Suite Sign-On Audit and Page Access Tracking on the One-to-One Fulfillment responsibilities.
Forward application tier and database audit logs to a centralized analytics platform for correlation with authentication events.
Track administrative function changes within the Documents component and alert on changes performed outside approved change windows.

How to Mitigate CVE-2026-101699

Immediate Actions Required

Apply the October 2026 Critical Patch Update for Oracle E-Business Suite as published in the Oracle Security Alert October 2026.
Inventory all Oracle E-Business Suite environments running versions 12.2.3 through 12.2.15 and prioritize internet-exposed instances.
Review and reduce user population assigned to One-to-One Fulfillment responsibilities until patching is complete.

Patch Information

Oracle released fixes for CVE-2026-101699 in the October 2026 Critical Patch Update. Administrators should download the applicable patch for Oracle E-Business Suite 12.2 from My Oracle Support and follow Oracle's documented application tier patching procedures. Validate the patch in a non-production environment before production rollout.

Workarounds

Restrict HTTP access to Oracle E-Business Suite application tier endpoints to trusted network segments and VPN users.
Temporarily disable or restrict the One-to-One Fulfillment module responsibilities for low-privileged accounts if patching cannot be completed immediately.
Place a web application firewall in front of the E-Business Suite environment and apply rules that reject anomalous requests to the Documents component paths.

bash

# Example WAF rule to restrict access to One-to-One Fulfillment Documents endpoints
# Allow only requests from the corporate CIDR; deny all others
SecRule REQUEST_URI "@beginsWith /OA_HTML/jtfwcwel" \
  "id:1026101699,phase:1,deny,status:403,\
   chain,msg:'Restrict Oracle One-to-One Fulfillment Documents access'"
  SecRule REMOTE_ADDR "!@ipMatch 10.0.0.0/8"