CVE-2026-83119: Oracle User Management Privilege Escalation

CVE-2026-83119 Overview

CVE-2026-83119 is a privilege escalation vulnerability in the Oracle User Management product of Oracle E-Business Suite, specifically within the Internal Operations component. The flaw affects supported versions 12.2.6 through 12.2.15. A low-privileged attacker with network access over HTTP can exploit the weakness to compromise Oracle User Management. Successful exploitation results in full takeover of the Oracle User Management module, impacting confidentiality, integrity, and availability. Oracle disclosed the issue through Security Alert CSPUSEP2026. The underlying weakness is classified as [CWE-269] Improper Privilege Management.

Critical Impact
An authenticated attacker with minimal privileges can escalate access over the network and take over Oracle User Management, exposing sensitive business data and administrative functions.

Affected Products

Oracle E-Business Suite Oracle User Management 12.2.6
Oracle E-Business Suite Oracle User Management 12.2.7 through 12.2.14
Oracle E-Business Suite Oracle User Management 12.2.15

Discovery Timeline

2026-09-15 - CVE-2026-83119 published to NVD
2026-09-17 - Last updated in NVD database

Technical Details for CVE-2026-83119

Vulnerability Analysis

The vulnerability resides in the Internal Operations component of Oracle User Management, a module responsible for managing user accounts, roles, and delegated administration in Oracle E-Business Suite. Improper privilege management [CWE-269] allows a user with limited application-level privileges to perform actions that should be restricted to higher-privileged administrative roles. The attack completes over HTTP without user interaction, which lowers the barrier for exploitation in environments where the E-Business Suite web tier is reachable by many internal users or exposed to broader networks.

Root Cause

The root cause is improper enforcement of role and privilege boundaries within the User Management Internal Operations component. The application accepts authenticated requests without adequately validating whether the calling account holds the privileges required for the requested operation. This allows a low-privileged session to invoke sensitive management functions and modify user, role, or delegation state.

Attack Vector

An attacker authenticates to the Oracle E-Business Suite web tier using any low-privileged account. The attacker then issues crafted HTTP requests to User Management endpoints exposed by the Internal Operations component. Because privilege checks are insufficient, the requests execute with effective permissions beyond what the account holds, leading to takeover of the User Management module. No user interaction is required, and the scope remains unchanged, but the impact spans confidentiality, integrity, and availability.

No public proof-of-concept code is available. Technical details are described in prose only, consistent with information published in Oracle's advisory. Refer to the Oracle Security Alert CSPUSEP2026 for vendor guidance.

Detection Methods for CVE-2026-83119

Indicators of Compromise

Unexpected creation, modification, or role-grant activity within Oracle User Management audit tables such as FND_USER, WF_LOCAL_USER_ROLES, and FND_GRANTS.
HTTP requests to User Management servlets and OA Framework pages originating from non-administrative accounts but performing administrative actions.
New delegated administration assignments or role hierarchy changes issued outside of change-control windows.

Detection Strategies

Correlate application-tier access logs from the Oracle HTTP Server with database audit records to identify privileged operations performed by accounts lacking the corresponding responsibilities.
Baseline normal usage of Internal Operations endpoints and alert on volume or source anomalies from user accounts that typically do not administer users or roles.
Enable and review Oracle E-Business Suite Sign-On Audit and Page Access Tracking to surface unusual navigation into User Management screens.

Monitoring Recommendations

Forward Oracle HTTP Server, WebLogic, and E-Business Suite database audit logs to a centralized SIEM for continuous correlation.
Monitor for spikes in FND_USER_RESP_GROUPS and role assignment changes tied to accounts without a change ticket.
Alert on any successful HTTP POST requests to User Management administrative URLs from IP ranges outside authorized administrator networks.

How to Mitigate CVE-2026-83119

Immediate Actions Required

Apply the fixes referenced in Oracle Security Alert CSPUSEP2026 to all Oracle E-Business Suite environments running versions 12.2.6 through 12.2.15.
Restrict network access to the E-Business Suite web tier so that only trusted user populations can reach User Management endpoints.
Review recent User Management activity, focusing on role grants, responsibility assignments, and delegated administration changes for signs of abuse.

Patch Information

Oracle released fixes for CVE-2026-83119 as part of Security Alert CSPUSEP2026. Administrators should identify the applicable patch for each affected 12.2.x release level, stage it in a non-production environment, and roll it out following Oracle's adop patching procedure. Consult the Oracle Security Alert CSPUSEP2026 for the authoritative patch matrix and prerequisites.

Workarounds

Reduce the population of accounts that can authenticate to E-Business Suite until patches are deployed, particularly for shared or service accounts.
Place a reverse proxy or web application firewall in front of the E-Business Suite web tier and restrict access to User Management URLs to administrative source networks.
Increase auditing on FND_USER, WF_LOCAL_USER_ROLES, and related User Management tables to accelerate detection of unauthorized privilege changes.

bash

# Example: restrict access to User Management URIs at the reverse proxy
# Only allow administrator source networks to reach User Management pages
location ~* /OA_HTML/.*UserManagement.* {
    allow 10.10.20.0/24;   # admin subnet
    deny  all;
    proxy_pass http://ebs-web-tier;
}