CVE-2026-91305 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 HTTPS to compromise JD Edwards EnterpriseOne Tools. Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all JD Edwards EnterpriseOne Tools accessible data as well as unauthorized access to critical data or complete access to all JD Edwards EnterpriseOne Tools accessible data. CVSS 3.1 Base Score 9.1 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N).
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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 deficiency in how the application handles authentication and access control during its installation or initial configuration phases. The core technical issue allows an unauthenticated attacker to exploit weaknesses in the HTTPS interface, bypassing standard authorization mechanisms that should restrict administrative actions to verified users only. Because the vulnerability is easily exploitable with low complexity requirements, it poses a severe risk to organizations relying on this enterprise resource planning software for their critical business operations.
From a technical perspective, the flaw enables an attacker who has network access via HTTPS to compromise the integrity and confidentiality of the JD Edwards EnterpriseOne Tools environment without providing valid credentials. This lack of proper authentication enforcement suggests that sensitive endpoints or administrative functions are exposed in a manner that does not strictly validate user identity before granting elevated privileges. The ability to perform unauthorized actions such as creation, deletion, or modification of critical data indicates a failure in input validation and access control logic within the installation security module. Such weaknesses often stem from improper configuration defaults, missing authentication checks on specific API endpoints, or insecure handling of session tokens during the setup process.
The operational impact of this vulnerability is substantial due to its high severity rating of 9.1 on the CVSS v3.1 scale. The primary impacts are categorized under Confidentiality and Integrity, with Availability remaining unaffected according to the provided vector. An attacker who successfully exploits this flaw can gain unauthorized access to critical data or achieve complete access to all JD Edwards EnterpriseOne Tools accessible data. This level of compromise allows for the exfiltration of sensitive business information, including financial records, customer details, and proprietary operational data. Furthermore, the ability to modify or delete data undermines the integrity of the entire system, potentially leading to corrupted reports, disrupted workflows, and significant reputational damage. The absence of availability impact suggests that while data is at risk, the service itself may remain online, masking the intrusion from immediate detection by monitoring systems focused on uptime.
In terms of industry standards classification, this vulnerability aligns with CWE-287 Improper Authentication, as it allows unauthenticated access to sensitive resources. It also relates closely to CWE-862 Missing Authorization, since the attacker can perform actions that should be restricted to authenticated administrators. From a threat actor perspective, this exploit maps to MITRE ATT&CK techniques involving Initial Access and Credential Access, specifically leveraging exposed administrative interfaces or insecure configurations to establish a foothold within the network. The ease of exploitation via HTTPS highlights common pitfalls in web application security where secure transport protocols are assumed to provide sufficient protection without rigorous backend validation.
To mitigate this risk, organizations must immediately apply the latest patches provided by Oracle for JD Edwards EnterpriseOne Tools versions 9.2.0.0 through 9.2.26.5. It is imperative to verify that all instances of the software within the enterprise environment are updated to a version where this installation security flaw has been resolved. In addition to patching, administrators should review network segmentation strategies to ensure that JD Edwards administrative interfaces are not directly exposed to untrusted networks or the public internet without additional layers of authentication such as multi-factor authentication or IP whitelisting. Regular vulnerability scanning and penetration testing focused on web application security can help identify similar misconfigurations before they are exploited by malicious actors. Monitoring logs for unusual access patterns, particularly those involving administrative functions from unexpected sources, will also aid in early detection of potential exploitation attempts.