CVE-2026-62528: Oracle HCM Auth Bypass Vulnerability

CVE-2026-62528 Overview

CVE-2026-62528 affects the Oracle HCM Configuration Workbench component within Oracle E-Business Suite. The flaw resides in the Install component and impacts supported versions 12.2.3 through 12.2.15. An authenticated attacker with low privileges can exploit this vulnerability over HTTP without user interaction.

Successful exploitation grants unauthorized update, insert, or delete access to a subset of application data. Attackers also gain read access to portions of accessible data and can trigger a partial denial of service. The vulnerability is categorized under [CWE-89] (SQL Injection), which typically results from unsanitized input reaching database query construction.

Critical Impact
Low-privileged network attackers can modify HCM Configuration Workbench data and induce partial denial-of-service conditions against Oracle E-Business Suite deployments.

Affected Products

Oracle HCM Configuration Workbench 12.2.3 through 12.2.15
Oracle E-Business Suite (Install component)
Oracle Human Capital Management module dependencies

Discovery Timeline

2026-07-21 - CVE-2026-62528 published to NVD
2026-07-22 - Last updated in NVD database
July 2026 - Addressed in Oracle Critical Patch Update advisory

Technical Details for CVE-2026-62528

Vulnerability Analysis

The vulnerability is a SQL injection flaw [CWE-89] affecting the Install component of Oracle HCM Configuration Workbench. The issue permits an authenticated user with low privileges to send crafted HTTP requests that alter the intended SQL logic executed by the application.

Exploitation impacts confidentiality, integrity, and availability at a limited scope. Read access is restricted to a subset of data, while write operations can insert, update, or delete records reachable by the affected component. Availability impact is limited to partial denial of service rather than a full outage.

The attack vector is network-based over HTTP, and no user interaction is required. Because Oracle E-Business Suite frequently stores sensitive HR, payroll, and workforce data, unauthorized data modification carries downstream business risk beyond the technical CVSS scoring.

Root Cause

The root cause is improper neutralization of special elements used in SQL commands. Input passed through the HCM Configuration Workbench Install component is concatenated into database queries without sufficient parameterization or sanitization. This design flaw allows attacker-controlled fragments to modify query semantics.

Attack Vector

An attacker authenticates to Oracle E-Business Suite with any low-privileged account. They then send crafted HTTP requests to endpoints exposed by the HCM Configuration Workbench installation component. Malicious payloads embedded in request parameters alter database queries to read, modify, or delete records the attacker should not access.

No public proof-of-concept has been published, and the vulnerability is not listed on the CISA Known Exploited Vulnerabilities catalog. Refer to the Oracle Security Alert July 2026 for authoritative technical details.

Detection Methods for CVE-2026-62528

Indicators of Compromise

Unexpected HTTP requests to HCM Configuration Workbench install endpoints containing SQL metacharacters such as single quotes, UNION, --, or ;
Database audit records showing DML statements originating from the Workbench service account outside normal change windows
Unauthorized modifications to HCM configuration tables not tied to a documented change ticket
Application error logs referencing malformed SQL or unexpected ORA- errors on Workbench servlets

Detection Strategies

Enable Oracle Database fine-grained auditing on tables reachable from the HCM Configuration Workbench schema
Deploy a web application firewall rule set that inspects HTTP parameters bound for E-Business Suite URIs for SQL injection signatures
Correlate authentication logs with low-privilege sessions issuing configuration write operations
Baseline normal query patterns from the Workbench application user and alert on statistical deviations

Monitoring Recommendations

Forward Oracle E-Business Suite access logs, application server logs, and database audit trails to a centralized SIEM
Alert on failed and successful login attempts followed by requests to /OA_HTML/ install endpoints
Monitor for enumeration behavior including sequential parameter tampering from a single session
Review privileged read access to HR and payroll tables on a recurring cadence

How to Mitigate CVE-2026-62528

Immediate Actions Required

Apply the July 2026 Oracle Critical Patch Update to all Oracle E-Business Suite 12.2.x environments
Inventory all HCM Configuration Workbench installations and confirm patch level 12.2.15 or later with the CPU applied
Restrict network exposure of the HCM Configuration Workbench endpoints to trusted internal networks only
Rotate credentials for any low-privileged accounts that could reach the vulnerable component pending patch verification

Patch Information

Oracle addressed CVE-2026-62528 in the July 2026 Critical Patch Update. Administrators should download the applicable patch from My Oracle Support and follow Oracle's E-Business Suite patching procedures. Full remediation details are available in the Oracle Security Alert July 2026.

Workarounds

Place the E-Business Suite front end behind a web application firewall configured with SQL injection detection rules
Reduce the number of accounts holding access to HCM Configuration Workbench functionality until patching is complete
Disable or restrict access to the Install component URLs at the reverse proxy layer where operationally feasible
Increase Oracle database auditing verbosity for the Workbench schema to shorten detection time for exploitation attempts

bash

# Configuration example: restrict HCM Configuration Workbench URIs at the reverse proxy
# Example nginx snippet limiting access to internal admin subnet
location ~* /OA_HTML/.*(HCM|Workbench|Install) {
    allow 10.0.0.0/8;
    deny all;
    proxy_pass http://ebs_backend;
}