CVE-2026-91303 in JD Edwards EnterpriseOne Tools
Summary
by MITRE • 10/21/2026
Vulnerability in the JD Edwards EnterpriseOne Tools product of Oracle JD Edwards (component: Installation Security). Supported versions that are affected are 9.2.0.0-9.2.26.5. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise JD Edwards EnterpriseOne Tools. Successful attacks require human interaction from a person other than the attacker. Successful attacks of this vulnerability can result in takeover of JD Edwards EnterpriseOne Tools. CVSS 3.1 Base Score 8.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).
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Analysis
by VulDB Data Team • 10/21/2026
The identified vulnerability resides within the Installation Security component of Oracle JD Edwards EnterpriseOne Tools, specifically affecting versions ranging from 9.2.0.0 through 9.2.26.5. This security flaw represents a critical risk to organizations relying on this enterprise resource planning platform for their core business operations. The nature of the vulnerability allows an unauthenticated attacker who has network access via HTTP to compromise the integrity and availability of the JD Edwards EnterpriseOne Tools environment. While the attack vector is remote, it requires human interaction from a user other than the initial attacker, indicating that social engineering or phishing tactics are likely necessary to trigger the exploit condition. This characteristic aligns with common patterns in web application vulnerabilities where trust boundaries between users and system processes are improperly enforced, leading to unauthorized actions being executed under the context of an authenticated session initiated by a victim.
From a technical perspective, this vulnerability is classified as having high severity due to its potential for complete system takeover. The CVSS 3.1 base score of 8.8 reflects significant impacts on confidentiality, integrity, and availability. In terms of industry standards, this flaw likely maps to CWE-79, which covers Cross-Site Scripting (XSS) or similar injection-based flaws where untrusted input is not properly validated before being processed by the application server. Alternatively, it may relate to CWE-20, Improper Input Validation, if the issue stems from malformed requests that bypass security controls during installation or configuration processes. The requirement for human interaction suggests a scenario akin to CWE-841, which involves improper enforcement of workflow constraints, allowing an attacker to manipulate user behavior into performing privileged actions. Such vulnerabilities often exploit weaknesses in session management or access control mechanisms within the web interface used by administrators and end-users alike.
The operational impact of this vulnerability is severe, as successful exploitation can lead to full takeover of the JD Edwards EnterpriseOne Tools instance. This means that an attacker could potentially alter system configurations, exfiltrate sensitive business data, inject malicious code into reports or forms, or disrupt critical business processes dependent on the ERP system. Given that JD Edwards handles financials, supply chain management, and human resources for many enterprises, a compromise at this level can result in substantial financial loss, regulatory non-compliance, and reputational damage. The ability to achieve privilege escalation from an unauthenticated state through user interaction highlights a dangerous gap in the defense-in-depth strategy of the application. Attackers could leverage this foothold to pivot into other parts of the network if the JD Edwards server is not adequately segmented or isolated within the enterprise architecture.
Mitigation strategies must focus on both immediate remediation and long-term security hardening. The primary action required is to apply the latest patches provided by Oracle for all affected versions, ensuring that version 9.2.26.5 or later is deployed where possible. Organizations should also implement strict access controls around the JD Edwards web interface, restricting HTTP access to trusted IP ranges and enforcing multi-factor authentication for administrative accounts. Network segmentation plays a crucial role in limiting lateral movement; placing JD Edwards servers behind firewalls with minimal exposed ports reduces the attack surface significantly. Additionally, security awareness training is essential to mitigate the human interaction aspect of this vulnerability, as employees must be educated on recognizing suspicious links or requests that could trigger such exploits. Regular vulnerability scanning and penetration testing should be conducted to identify similar weaknesses in other web-facing applications within the enterprise ecosystem.
In alignment with the MITRE ATT&CK framework, this vulnerability facilitates techniques associated with Initial Access via Phishing if social engineering is used, followed by Execution through command injection or script execution on the server side. It also impacts Availability and Integrity as defined in the tactics of Impact and Collection respectively. Security teams should monitor for anomalous HTTP requests targeting JD Edwards endpoints and review logs for signs of unauthorized configuration changes or data access patterns that deviate from normal operational baselines. By combining timely patching with robust network security controls and user education, organizations can effectively neutralize this threat vector and maintain the integrity of their enterprise applications.