CVE-2026-83266 in JDeveloper
Summary
by MITRE • 09/16/2026
Vulnerability in the Oracle JDeveloper product of Oracle Fusion Middleware (component: Resource Catalog Services). Supported versions that are affected are 12.2.1.4.0 and 14.1.2.0.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle JDeveloper. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Oracle JDeveloper accessible data and unauthorized ability to cause a partial denial of service (partial DOS) of Oracle JDeveloper. CVSS 3.1 Base Score 8.2 (Confidentiality and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L).
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Analysis
by VulDB Data Team • 09/16/2026
The identified vulnerability resides within the Resource Catalog Services component of Oracle JDeveloper, a key part of the Oracle Fusion Middleware suite affecting versions 12.2.1.4.0 and 14.1.2.0.0. This security flaw is characterized by its ease of exploitation, allowing an unauthenticated attacker to compromise the system through network access via HTTP without requiring any user interaction or prior authentication credentials. The presence of this vulnerability in a development tool used for building enterprise applications significantly elevates the risk profile, as developers often have elevated privileges and access to sensitive source code and configuration data within their local environments.
From a technical perspective, the flaw enables unauthorized access to critical data stored by Oracle JDeveloper. This aligns with CWE-200, which classifies information exposure vulnerabilities where an attacker can gain insight into system internals or user data that should remain confidential. The ability to read sensitive files implies that attackers could extract proprietary source code, database connection strings, API keys, and other configuration details essential for the operation of applications developed using JDeveloper. This level of access effectively bypasses standard security controls designed to protect development artifacts from external threats.
In addition to confidentiality breaches, the vulnerability impacts system availability by allowing an attacker to cause a partial denial of service against Oracle JDeveloper. While not necessarily causing a complete crash of the underlying operating system or middleware infrastructure, this disruption can hinder development workflows and prevent legitimate users from accessing necessary tools and resources. This aspect corresponds with CWE-400, describing resource exhaustion conditions that lead to degraded performance or unavailability of services. The combination of data exfiltration capability and service degradation creates a multifaceted threat vector that compromises both the integrity of intellectual property and the operational continuity of development teams.
The attack scenario is consistent with ATT&CK technique T1505, specifically Server Software Component: Web Frameworks or CMS modules, where attackers exploit vulnerabilities in software components to gain initial access or execute malicious actions. Given the network-based nature of the exploitation via HTTP, this also relates to remote code execution principles often seen in web application attacks, although here it manifests primarily as unauthorized data access and service disruption rather than full command-line control over the host system. The CVSS 3.1 base score of 8.2 reflects a high severity rating driven by the network vector, low complexity, lack of required privileges for the attacker, and significant impacts on confidentiality and availability.
Mitigation strategies must prioritize immediate patching to the latest available version of Oracle JDeveloper that resolves this specific flaw in the Resource Catalog Services component. Organizations should review their inventory of affected versions 12.2.1.4.0 and 14.1.2.0.0 and apply security updates provided by Oracle as soon as they are released for these specific releases. In environments where patching is not immediately feasible, network segmentation strategies should be employed to restrict HTTP access to JDeveloper instances from untrusted networks or the public internet. Implementing strict firewall rules that limit inbound connections to only authorized IP addresses can significantly reduce the attack surface available to potential adversaries exploiting this vulnerability.
Furthermore, security monitoring and logging mechanisms should be enhanced to detect anomalous behavior associated with Resource Catalog Services requests. Unusual patterns in HTTP traffic, such as frequent access attempts from unknown sources or excessive data retrieval operations, may indicate exploitation activity. Regular audits of file system permissions and application configurations can help ensure that even if an attacker gains initial foothold through this vulnerability, their ability to move laterally or exfiltrate large volumes of data is constrained by robust least-privilege principles. Continuous vigilance and adherence to Oracle Critical Patch Update recommendations are essential for maintaining the security posture of development environments relying on Oracle Fusion Middleware components.