CVE-2026-61101 Overview
CVE-2026-61101 affects the Oracle MES for Process Manufacturing product within Oracle E-Business Suite, specifically the Internal Operations component. Supported versions 12.2.3 through 12.2.15 are affected. The flaw allows an unauthenticated remote attacker to compromise Oracle MES for Process Manufacturing over HTTP. Exploitation requires human interaction from a user other than the attacker, and successful attacks can affect additional products due to a scope change.
Critical Impact
Successful exploitation can result in unauthorized access to all data accessible by Oracle MES for Process Manufacturing and unauthorized update, insert, or delete access to a subset of that data.
Affected Products
- Oracle E-Business Suite — Oracle MES for Process Manufacturing 12.2.3
- Oracle E-Business Suite — Oracle MES for Process Manufacturing versions 12.2.4 through 12.2.14
- Oracle E-Business Suite — Oracle MES for Process Manufacturing 12.2.15
Discovery Timeline
- 2026-07-21 - CVE-2026-61101 published to NVD
- 2026-07-21 - Last updated in NVD database
- Oracle addressed the vulnerability in the Oracle Critical Patch Update - July 2026
Technical Details for CVE-2026-61101
Vulnerability Analysis
The vulnerability resides in the Internal Operations component of Oracle MES for Process Manufacturing, a module of Oracle E-Business Suite that manages shop floor execution for process manufacturing environments. An unauthenticated attacker with network access via HTTP can exploit the flaw when a legitimate user interacts with attacker-supplied content. The scope-changing nature of the vulnerability means impact can extend beyond the MES module into other components of the E-Business Suite deployment.
Successful exploitation results in high confidentiality impact and low integrity impact. Attackers can read the full set of data accessible to the MES for Process Manufacturing application and modify a limited subset of records. Availability is not impacted, but the confidentiality exposure covers production, inventory, and operations data typical to process manufacturing workflows.
The EPSS score is 0.228% with a percentile of 13.65, reflecting the current absence of public exploit code.
Root Cause
Oracle has not published a detailed root cause analysis. Based on the CVSS vector requiring user interaction and yielding a scope change, the flaw is consistent with a client-side injection or cross-context content handling issue in the Internal Operations component. A victim user must interact with attacker-supplied input to trigger the vulnerable code path.
Attack Vector
The attack is delivered over the network via HTTP. The attacker crafts a malicious request or link and induces a privileged user to interact with it. Once the user engages, the attacker gains unauthorized read access to MES for Process Manufacturing data and can perform limited unauthorized writes. No authentication is required from the attacker.
No public proof-of-concept code is available. Refer to the Oracle Critical Patch Update Advisory - July 2026 for vendor-supplied technical details.
Detection Methods for CVE-2026-61101
Indicators of Compromise
- Unexpected HTTP requests to Oracle MES for Process Manufacturing Internal Operations endpoints originating from external or untrusted networks.
- Session activity from authenticated MES users that immediately follows redirection from external URLs or email links.
- Anomalous read or modification patterns against MES for Process Manufacturing tables, particularly bulk exports or off-hours access.
Detection Strategies
- Enable and review Oracle E-Business Suite application audit logs for the Internal Operations component, correlating with source IP and referrer information.
- Monitor web application firewall and reverse proxy logs for suspicious query parameters or payloads targeting MES endpoints.
- Correlate user interaction events (email clicks, external referrers) with subsequent authenticated MES activity to identify social-engineering-driven exploitation.
Monitoring Recommendations
- Track failed and successful authentication events on Oracle E-Business Suite alongside HTTP request patterns to MES modules.
- Alert on privileged MES user sessions that exhibit high-volume data reads shortly after session establishment.
- Forward Oracle E-Business Suite, database, and web-tier logs to a centralized analytics platform to enable cross-source correlation.
How to Mitigate CVE-2026-61101
Immediate Actions Required
- Apply the fixes provided in the Oracle Critical Patch Update - July 2026 to all Oracle E-Business Suite 12.2.3 through 12.2.15 environments.
- Inventory all Oracle E-Business Suite instances running the MES for Process Manufacturing module and prioritize internet-exposed systems.
- Notify MES users about the risk of clicking untrusted links or opening unsolicited content while authenticated to the application.
Patch Information
Oracle released fixes for CVE-2026-61101 as part of the July 2026 Critical Patch Update. Administrators should review the advisory for the exact patch identifiers applicable to their Oracle E-Business Suite release and apply them following Oracle's documented CPU installation procedures.
Workarounds
- Restrict network access to Oracle E-Business Suite MES endpoints using firewall rules, VPN requirements, or reverse proxy allowlists.
- Enforce strict URL filtering and email security controls to reduce the likelihood of users interacting with attacker-supplied links.
- Require multi-factor authentication for Oracle E-Business Suite users to reduce the value of hijacked or misused sessions.
# Example: restrict inbound access to the Oracle E-Business Suite web tier
# Replace <trusted_cidr> with your management or corporate network ranges
iptables -A INPUT -p tcp --dport 8000 -s <trusted_cidr> -j ACCEPT
iptables -A INPUT -p tcp --dport 8000 -j DROP
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
