CVE-2026-61267: Oracle HCM Auth Bypass Vulnerability

CVE-2026-61267 Overview

CVE-2026-61267 is a network-exploitable vulnerability in the Oracle HCM Configuration Workbench product of Oracle E-Business Suite. The flaw resides in the Spreadsheet Loading component and affects supported versions 12.2.3 through 12.2.15. An unauthenticated attacker with HTTP network access can exploit the issue without user interaction. Successful exploitation permits unauthorized update, insert, or delete operations against a subset of Oracle HCM Configuration Workbench data. Attackers also gain unauthorized read access to some data and can trigger a partial denial of service. Oracle disclosed the vulnerability in its July 2026 Critical Patch Update advisory.

Critical Impact
Unauthenticated remote attackers can modify, read, and disrupt Oracle HCM Configuration Workbench data over HTTP without user interaction.

Affected Products

Oracle E-Business Suite — Oracle HCM Configuration Workbench 12.2.3
Oracle E-Business Suite — Oracle HCM Configuration Workbench 12.2.4 through 12.2.14
Oracle E-Business Suite — Oracle HCM Configuration Workbench 12.2.15

Discovery Timeline

2026-07-21 - CVE-2026-61267 published to NVD
2026-07-22 - Last updated in NVD database
July 2026 - Oracle publishes fix in the Oracle Critical Patch Update Advisory - July 2026

Technical Details for CVE-2026-61267

Vulnerability Analysis

The vulnerability affects the Spreadsheet Loading component of Oracle HCM Configuration Workbench, a module within Oracle E-Business Suite used for human capital management configuration. The weakness is classified under [CWE-200: Exposure of Sensitive Information to an Unauthorized Actor]. Exploitation requires only network access over HTTP and no authentication. An attacker sending crafted requests to the affected endpoint can obtain partial read access to workbench data. The same attack path permits limited write operations, including insertions, updates, and deletions against a subset of accessible records. It can also degrade service availability, producing a partial denial of service against the workbench.

Root Cause

Oracle has not published low-level root cause details in the advisory. The classification under CWE-200 and the affected Spreadsheet Loading component indicate insufficient access control and information exposure in the request handling logic. The handler does not validate caller identity or scope before performing spreadsheet-driven data operations.

Attack Vector

The attack vector is network-based over HTTP. An unauthenticated attacker sends requests to the exposed Spreadsheet Loading interface of Oracle HCM Configuration Workbench. No privileges and no user interaction are required. Attack complexity is low, and the impact remains scoped to the vulnerable component rather than the underlying host. Exploitation is straightforward against internet-exposed or intranet-reachable Oracle E-Business Suite deployments.

No verified public proof-of-concept code is available at the time of publication. Refer to the Oracle Security Alert July 2026 for authoritative technical details.

Detection Methods for CVE-2026-61267

Indicators of Compromise

Unauthenticated HTTP or HTTPS requests to Oracle HCM Configuration Workbench Spreadsheet Loading endpoints from unexpected sources.
Unexplained insert, update, or delete operations against Oracle HCM Configuration Workbench tables outside of normal change windows.
Spikes in HTTP 5xx responses or request timeouts from the workbench service indicating partial denial-of-service attempts.

Detection Strategies

Correlate Oracle E-Business Suite application logs with web server access logs to identify anonymous access to Spreadsheet Loading URLs.
Baseline expected workbench user activity and alert on data modification events lacking an authenticated session identifier.
Deploy web application firewall rules that inspect requests targeting the HCM Configuration Workbench module for anomalous payloads.

Monitoring Recommendations

Enable Oracle E-Business Suite auditing for HCM Configuration Workbench tables and forward logs to a centralized SIEM.
Monitor for unusual bursts of spreadsheet upload requests from single source IPs or from outside trusted network ranges.
Track availability metrics of the workbench service to detect partial denial-of-service conditions early.

How to Mitigate CVE-2026-61267

Immediate Actions Required

Apply the July 2026 Oracle Critical Patch Update to all Oracle E-Business Suite instances running versions 12.2.3 through 12.2.15.
Restrict network exposure of Oracle HCM Configuration Workbench to trusted internal networks and VPN users only.
Review recent workbench audit logs for signs of unauthorized data reads or modifications since versions became reachable.

Patch Information

Oracle released a fix for CVE-2026-61267 in the July 2026 Critical Patch Update. Administrators should download and apply the patch bundle for Oracle E-Business Suite 12.2 following the guidance in the Oracle Critical Patch Update Advisory - July 2026. Verify patch application by reviewing the Oracle Applications Manager patch history after installation.

Workarounds

Place the Oracle E-Business Suite front-end behind a reverse proxy or web application firewall that enforces authentication before requests reach the HCM Configuration Workbench.
Disable or block access to the Spreadsheet Loading endpoint if the feature is not required for business operations.
Implement network segmentation to prevent untrusted clients from reaching the workbench listener over HTTP.

bash

# Example: restrict access to the HCM Configuration Workbench path at the reverse proxy
# Apache httpd configuration snippet
<Location "/OA_HTML/OA.jsp">
    Require ip 10.0.0.0/8
    Require ip 192.168.0.0/16
</Location>