CVE-2026-60670: Oracle E-Business Suite Auth Bypass Flaw

CVE-2026-60670 Overview

CVE-2026-60670 is a network-exploitable vulnerability in the Oracle Applications Technology Stack, part of Oracle E-Business Suite. The flaw resides in the Client System Analyzer component and affects supported versions 12.2.3 through 12.2.15. An unauthenticated remote attacker with HTTP access to the application can compromise the Oracle Applications Technology Stack. Successful exploitation results in full takeover of the affected instance, impacting confidentiality, integrity, and availability. Oracle addressed the issue in the July 2026 Critical Patch Update.

Critical Impact
Unauthenticated attackers reachable over HTTP can achieve full takeover of the Oracle Applications Technology Stack, exposing all data and business processes managed by Oracle E-Business Suite.

Affected Products

Oracle E-Business Suite — Oracle Applications Technology Stack, version 12.2.3
Oracle E-Business Suite — Oracle Applications Technology Stack, versions 12.2.4 through 12.2.14
Oracle E-Business Suite — Oracle Applications Technology Stack, version 12.2.15

Discovery Timeline

2026-07-21 - CVE-2026-60670 published to NVD
2026-07-21 - Last updated in NVD database
July 2026 - Oracle releases fix in the Oracle Critical Patch Update Advisory

Technical Details for CVE-2026-60670

Vulnerability Analysis

The vulnerability resides in the Client System Analyzer component of the Oracle Applications Technology Stack. Client System Analyzer is a browser-invoked utility used to inspect and report client-side configuration data for Oracle E-Business Suite users. Because the component is exposed through the E-Business Suite HTTP stack, it is reachable by any client that can send HTTP requests to the application server.

Oracle classifies the flaw as difficult to exploit, but the impacts on confidentiality, integrity, and availability are each rated High. Oracle further states that successful attacks result in takeover of the Oracle Applications Technology Stack, meaning the attacker gains control over the server-side application environment rather than merely the client. Oracle has not published root-cause details, exploit code, or a CWE mapping. No known exploitation in the wild has been reported, and the vulnerability is not listed in the CISA Known Exploited Vulnerabilities catalog. The EPSS score is 0.294% at the 21.48 percentile as of 2026-07-23.

Root Cause

Oracle has not disclosed the specific root cause of CVE-2026-60670 in the July 2026 Critical Patch Update. The advisory identifies only the affected product, component, version range, attack surface, and impact profile. Given that exploitation occurs over HTTP without authentication and results in server-side takeover, the underlying defect is consistent with an input-handling or access-control weakness in a Client System Analyzer request handler.

Attack Vector

The attack vector is network-based over HTTP. Exploitation requires no valid credentials and no user interaction. An attacker who can reach the Oracle E-Business Suite web tier — including internet-exposed deployments — can attempt to compromise the application server. Oracle labels exploitation difficulty as high, suggesting that specific timing, configuration, or request conditions are required to trigger the flaw reliably.

No public proof-of-concept exploit has been released. Oracle's advisory is the only authoritative technical reference at this time.

Detection Methods for CVE-2026-60670

Indicators of Compromise

Unauthenticated HTTP or HTTPS requests targeting Client System Analyzer endpoints, typically served under the /OA_HTML/ path of the E-Business Suite web tier.
Anomalous child processes spawned by the Oracle HTTP Server or WebLogic managed servers hosting the Applications Technology Stack.
Outbound network connections from application-tier hosts to unfamiliar external addresses following inbound Client System Analyzer requests.
New or modified files under Oracle E-Business Suite application directories that were not written by an authorized patch or deployment process.

Detection Strategies

Inspect web server access logs for unauthenticated requests to Client System Analyzer URLs, particularly requests carrying unusually large payloads or malformed parameters.
Alert on process-lineage anomalies where the Oracle HTTP Server or WebLogic Java processes execute shells, script interpreters, or system utilities.
Correlate inbound requests to the Applications Technology Stack with subsequent authentication events, privilege changes, or outbound connections on the same host.
Baseline the volume and source of Client System Analyzer traffic and flag deviations from expected client populations.

Monitoring Recommendations

Forward Oracle HTTP Server, WebLogic, and application-tier operating-system logs to a centralized analytics platform for correlation and long-term retention.
Monitor the E-Business Suite web tier for new administrative accounts, changes to FND_USER, and unexpected concurrent-manager job submissions.
Track file-integrity changes across $APPL_TOP, $INST_TOP, and web-tier deployment directories.
Continuously validate that only expected client networks can reach Client System Analyzer endpoints, and alert on connections from unapproved source ranges.

How to Mitigate CVE-2026-60670

Immediate Actions Required

Apply the July 2026 Oracle Critical Patch Update to every Oracle E-Business Suite environment running Oracle Applications Technology Stack 12.2.3 through 12.2.15.
Inventory internet-exposed and partner-accessible E-Business Suite instances and prioritize them for immediate patching.
Restrict network access to the E-Business Suite web tier so that only trusted client networks and VPN users can reach Client System Analyzer URLs.
Review web server and application logs for suspicious Client System Analyzer traffic dating back to the disclosure period.

Patch Information

Oracle released the fix as part of the July 2026 Critical Patch Update. Administrators should follow the patch matrix and installation instructions published in the Oracle Critical Patch Update Advisory. Because Oracle Applications Technology Stack updates typically require adop online or downtime-based patching cycles, plan a maintenance window and validate application functionality after deployment.

Workarounds

If immediate patching is not possible, disable or block external access to the Client System Analyzer component in the E-Business Suite profile options and web tier configuration.
Deploy web application firewall rules that block unauthenticated requests to Client System Analyzer URLs from untrusted networks.
Terminate TLS at a reverse proxy that enforces network-level access control lists in front of the Oracle HTTP Server.
Remove or firewall internet exposure of the Oracle E-Business Suite web tier until the Critical Patch Update is applied.

bash

# Example: restrict Client System Analyzer paths at an Apache/OHS reverse proxy
# Replace 10.0.0.0/8 with the CIDR range authorized to reach the E-Business Suite web tier
<Location "/OA_HTML/jsp/fnd/csa">
    Require ip 10.0.0.0/8
    Require ip 192.168.0.0/16
</Location>

<LocationMatch "(?i)/OA_HTML/.*(CSA|ClientSystemAnalyzer).*">
    Require ip 10.0.0.0/8
    Require ip 192.168.0.0/16
</LocationMatch>