CVE-2026-46940: Oracle Cost Management Privilege Escalation

CVE-2026-46940 Overview

CVE-2026-46940 is a high-severity vulnerability in the Oracle Cost Management product of Oracle E-Business Suite, specifically within the Cost Planning component. Affected versions span 12.2.3 through 12.2.15. The flaw allows a low-privileged attacker with network access via HTTP to compromise Oracle Cost Management. Successful exploitation can result in full takeover of the application, including impacts to confidentiality, integrity, and availability. The vulnerability is classified under CWE-269: Improper Privilege Management.

Critical Impact
An authenticated attacker with low privileges can take over Oracle Cost Management remotely over HTTP, leading to complete compromise of business cost data and downstream E-Business Suite processes.

Affected Products

Oracle Cost Management 12.2.3 through 12.2.15
Oracle E-Business Suite (Cost Planning component)
Deployments referenced by CPE cpe:2.3:a:oracle:cost_management:*

Discovery Timeline

2026-06-17 - CVE-2026-46940 published to NVD
2026-06-18 - Last updated in NVD database
2026-06 - Oracle releases fix via the Oracle Security Alert Advisory

Technical Details for CVE-2026-46940

Vulnerability Analysis

The vulnerability resides in the Cost Planning component of Oracle Cost Management, a module of Oracle E-Business Suite used for inventory cost rollups, item cost management, and accounting integration. The flaw is categorized as Improper Privilege Management [CWE-269]. An authenticated user with low privileges can issue HTTP requests that perform actions beyond the privileges granted by their role. Because Cost Planning ties directly to financial transaction processing and inventory valuation, takeover of the module yields broad access to sensitive enterprise data and the ability to alter cost records.

Oracle classifies the issue as easily exploitable, requiring no user interaction. Exploitation does not break out of the application's security scope, but it grants complete control over the Cost Management product within that scope. The current EPSS probability of exploitation is 0.447%.

Root Cause

The underlying defect is improper enforcement of privilege boundaries within the Cost Planning component. The application accepts requests from authenticated low-privileged sessions without verifying that the caller holds the role required for the requested operation. This allows privilege escalation within the Oracle Cost Management application context.

Attack Vector

Exploitation occurs over the network via HTTP against an exposed Oracle E-Business Suite instance. The attacker must hold valid credentials at any low-privilege level. No user interaction is required, and no specialized environment is needed beyond reachability to the Cost Planning endpoints. Refer to the Oracle Critical Patch Update advisory for technical specifics.

Detection Methods for CVE-2026-46940

Indicators of Compromise

Unexpected privileged actions (cost updates, cost rollups, item cost modifications) performed by user accounts that lack the corresponding Cost Management responsibility.
HTTP requests to Cost Planning servlets or JSPs originating from sessions that do not normally interact with that module.
Anomalous spikes in FND_LOG_MESSAGES or Oracle E-Business Suite application logs tied to Cost Management forms outside business hours.

Detection Strategies

Correlate authenticated session activity against assigned responsibilities in FND_USER_RESP_GROUPS to identify users invoking Cost Planning actions outside their role scope.
Monitor middle-tier HTTP access logs for repeated POSTs to Cost Management endpoints from accounts with minimal entitlements.
Audit changes to item costs, cost types, and rollup definitions and compare against approved change tickets.

Monitoring Recommendations

Enable Oracle E-Business Suite Sign-On Audit and Page Access Tracking for Cost Management responsibilities.
Forward Oracle HTTP Server and application tier logs to a central log platform with alerting on privilege-mismatch patterns.
Establish baselines for Cost Planning transaction volume per user and alert on deviations.

How to Mitigate CVE-2026-46940

Immediate Actions Required

Apply the Oracle Critical Patch Update referenced in the June 2026 Security Alert to all Oracle E-Business Suite instances running Cost Management versions 12.2.3 through 12.2.15.
Inventory all internet-reachable Oracle E-Business Suite deployments and restrict Cost Management endpoints to trusted networks until patching is complete.
Review and reduce the population of accounts with any Cost Management responsibility to minimize the exploitable user base.

Patch Information

Oracle has released fixes as part of its Critical Patch Update cycle. Administrators should download and apply the patches listed in the Oracle Security Alert for Oracle E-Business Suite 12.2. Validate patch application in a non-production environment, then schedule production rollout with appropriate downtime windows.

Workarounds

Restrict HTTP access to the Oracle E-Business Suite middle tier using a reverse proxy or web application firewall that limits Cost Management URLs to authorized users.
Disable or remove Cost Management responsibilities from accounts that do not require them, narrowing the authenticated attack surface.
Increase audit log retention and review frequency for Cost Management activity until the patch is deployed.

bash

# Verify installed Oracle E-Business Suite patch level for Cost Management
# Run from the application tier as the APPLMGR user
sqlplus apps/<password> <<EOF
SELECT bug_number, last_update_date
FROM   ad_bugs
WHERE  bug_number IN ('<CPU_JUN_2026_PATCH_ID>')
ORDER  BY last_update_date DESC;
EOF