CVE-2026-34274: Oracle Configurator Auth Bypass Vulnerability

CVE-2026-34274 Overview

A vulnerability has been identified in the Oracle Configurator product of Oracle E-Business Suite, specifically affecting the User Interface component. This easily exploitable vulnerability allows an unauthenticated attacker with network access via HTTP to compromise Oracle Configurator. The vulnerability requires human interaction from a person other than the attacker, and while the vulnerability exists in Oracle Configurator, successful attacks may significantly impact additional products due to scope change.

Successful exploitation can result in unauthorized update, insert, or delete access to some Oracle Configurator accessible data, as well as unauthorized read access to a subset of Oracle Configurator accessible data.

Critical Impact

Unauthenticated attackers can exploit this vulnerability remotely via HTTP to gain unauthorized access to sensitive data and modify Oracle Configurator data, with potential impact extending to additional products.

Affected Products

• Oracle Configurator versions 12.2.3 through 12.2.15
• Oracle E-Business Suite (User Interface component)

Discovery Timeline

• April 21, 2026 - CVE-2026-34274 published to NVD
• April 23, 2026 - Last updated in NVD database

Technical Details for CVE-2026-34274

Vulnerability Analysis

This vulnerability is classified under CWE-284 (Improper Access Control), indicating a fundamental weakness in the access control mechanisms within the Oracle Configurator User Interface component. The vulnerability allows unauthenticated attackers to bypass intended security restrictions through network-based attacks over HTTP.

The scope change characteristic of this vulnerability is particularly concerning, as it means successful exploitation within Oracle Configurator can cascade to affect other products and systems within the Oracle E-Business Suite ecosystem. The attack requires user interaction, suggesting a social engineering or phishing component may be necessary to trigger the vulnerability, such as tricking a user into clicking a malicious link or visiting a crafted webpage.

Root Cause

The root cause of this vulnerability stems from improper access control (CWE-284) in the User Interface component of Oracle Configurator. The application fails to properly validate or enforce authorization checks, allowing unauthenticated users to perform actions that should be restricted to authorized users only. This access control weakness permits both read and write operations on data that should be protected.

Attack Vector

The attack vector for CVE-2026-34274 is network-based and exploits the HTTP protocol. An unauthenticated attacker can remotely target vulnerable Oracle Configurator instances without requiring any credentials or prior authentication. However, the attack does require human interaction from a victim user.

The attack scenario typically involves:

1. An attacker crafts a malicious HTTP request or webpage targeting the Oracle Configurator User Interface
2. A legitimate user is tricked into interacting with the malicious content (e.g., clicking a link, visiting a page)
3. The vulnerability is triggered, allowing the attacker to read or modify Oracle Configurator data
4. Due to scope change, the attack may propagate to affect additional products in the E-Business Suite

Since no verified code examples are available for this vulnerability, organizations should refer to the Oracle Security Alert April 2026 for specific technical details and patch information.

Detection Methods for CVE-2026-34274

Indicators of Compromise

• Unusual HTTP requests to Oracle Configurator User Interface endpoints from external or unexpected sources
• Unauthorized data access or modification events in Oracle Configurator audit logs
• Anomalous user session patterns indicating potential exploitation via social engineering vectors

Detection Strategies

• Monitor Oracle Configurator access logs for suspicious HTTP request patterns, particularly those involving unauthenticated access attempts
• Implement web application firewall (WAF) rules to detect and block known attack signatures targeting Oracle E-Business Suite
• Enable detailed audit logging for Oracle Configurator to track data access and modification events
• Deploy behavioral analytics to identify unusual access patterns that may indicate exploitation

Monitoring Recommendations

• Configure alerts for failed authentication attempts and suspicious access patterns in Oracle Configurator
• Monitor network traffic for unusual HTTP communication to Oracle E-Business Suite servers
• Review Oracle Configurator audit trails regularly for signs of unauthorized data access or modification
• Implement user activity monitoring to detect potential social engineering attempts leading to exploitation

How to Mitigate CVE-2026-34274

Immediate Actions Required

• Apply the security patch from Oracle's April 2026 Critical Patch Update as soon as possible
• Restrict network access to Oracle Configurator to trusted networks and users only
• Implement additional authentication controls and access restrictions for the User Interface component
• Educate users about social engineering attacks and the risks of clicking unknown links

Patch Information

Oracle has released a security patch addressing this vulnerability as part of the April 2026 Critical Patch Update. Organizations running Oracle Configurator versions 12.2.3 through 12.2.15 should apply the patch immediately. Detailed patch information and download instructions are available in the Oracle Security Alert April 2026.

Workarounds

• Implement network segmentation to isolate Oracle Configurator from untrusted networks
• Deploy a web application firewall (WAF) with rules to filter malicious HTTP requests
• Restrict access to the Oracle Configurator User Interface to only authorized internal users
• Enable multi-factor authentication (MFA) for all users accessing Oracle E-Business Suite applications

# Example: Network access restriction configuration
# Restrict Oracle Configurator access to internal networks only
# Add to web server or firewall configuration

# Apache example - restrict access by IP range
<Location /OA_HTML/configurator>
    Require ip 10.0.0.0/8
    Require ip 192.168.0.0/16
</Location>