CVE-2026-83455 in Demand Signal Repository
Summary
by MITRE • 09/16/2026
Vulnerability in the Oracle Demand Signal Repository product of Oracle E-Business Suite (component: Internal Operations). Supported versions that are affected are 12.2.3-12.2.15. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise Oracle Demand Signal Repository. Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Oracle Demand Signal Repository accessible data as well as unauthorized access to critical data or complete access to all Oracle Demand Signal Repository accessible data. CVSS 3.1 Base Score 8.1 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N).
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Analysis
by VulDB Data Team • 09/16/2026
The Oracle Demand Signal Repository, a critical component within the Oracle E-Business Suite ecosystem under the Internal Operations module, is susceptible to a significant security flaw affecting versions 12.2.3 through 12.2.15. This vulnerability represents a serious risk to organizations relying on this software for demand planning and supply chain analytics. The core of the issue lies in an authentication bypass or insufficient access control mechanism that allows low-privileged users, who possess valid network credentials, to execute unauthorized operations via HTTP requests. Unlike high-severity vulnerabilities that require complex exploitation chains or physical proximity, this flaw is easily exploitable over a standard network connection without requiring user interaction such as clicking malicious links or opening crafted files. The attack vector is classified as Network-based with Low Attack Complexity and requires only Low Privileges to initiate the exploit, indicating that even basic authenticated users can leverage this weakness to escalate their capabilities significantly within the application environment.
The technical nature of this vulnerability centers on improper authorization checks during internal API calls or data processing routines handled by the Demand Signal Repository service. When a low-privileged user sends specific HTTP requests targeting these internal operations, the system fails to adequately verify whether the user has sufficient rights for the requested action. This logical flaw effectively bypasses standard role-based access controls, allowing the attacker to perform actions reserved for administrative or higher-level users. The absence of strict validation on input parameters and session context enables the manipulation of critical data structures within the repository. Consequently, an adversary can manipulate the integrity of demand forecasts, inventory records, and other sensitive business intelligence metrics that are stored in this module.
The operational impact of a successful exploitation is severe, primarily affecting the confidentiality and integrity aspects of the CIA triad while leaving availability largely intact according to the CVSS scoring model with a base score of 8.1. An attacker can achieve unauthorized creation, deletion, or modification of critical data within the Oracle Demand Signal Repository. This means that business-critical information such as sales projections, supplier contracts, and inventory levels can be altered maliciously or deleted entirely, leading to potential financial losses, disrupted supply chains, and compromised decision-making processes based on corrupted data. Furthermore, the vulnerability grants unauthorized access to sensitive data that should remain restricted, potentially exposing proprietary strategies and customer information to internal threats or external actors who have gained foothold through other means but are limited by initial low-level permissions.
From a classification perspective, this vulnerability aligns with CWE-269 Improper Privilege Management and CWE-862 Missing Authorization in the Common Weakness Enumeration framework. It also maps closely to MITRE ATT&CK techniques related to Lateral Movement and Data Manipulation, specifically where an attacker uses existing low-level access to pivot into higher-value assets or alter data states without detection by standard monitoring tools that focus on high-severity events rather than subtle privilege escalations within application logic. The fact that the attack requires only network access via HTTP highlights the importance of securing internal web services and ensuring that API endpoints are rigorously tested for authorization flaws, as these often serve as entry points for deeper system compromise when perimeter defenses like firewalls do not inspect authenticated traffic deeply enough.
Mitigation strategies must prioritize immediate patching to the latest supported version of Oracle E-Business Suite where this flaw has been addressed by vendor security updates. Organizations should verify their current deployment versions against the affected range and apply the relevant CPU (Critical Patch Update) or PSU (Patch Set Update) as soon as possible. In environments where immediate patching is not feasible due to operational constraints, temporary mitigations include restricting network access to the Oracle E-Business Suite application tier using strict firewall rules that limit HTTP traffic to only authorized IP addresses and implementing Web Application Firewall policies that monitor for anomalous patterns in internal API calls. Additionally, enhancing logging and monitoring capabilities to detect unusual data modification activities by low-privileged accounts can help identify potential exploitation attempts early. Regular audits of user permissions and adherence to the principle of least privilege are essential long-term controls to prevent similar vulnerabilities from being leveraged effectively within the enterprise infrastructure.