CVE-2026-83135 in iStore
Summary
by MITRE • 09/16/2026
Vulnerability in the Oracle iStore product of Oracle E-Business Suite (component: Shopping Cart). 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 iStore. Successful attacks require human interaction from a person other than the attacker and while the vulnerability is in Oracle iStore, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Oracle iStore accessible data as well as unauthorized access to critical data or complete access to all Oracle iStore accessible data. CVSS 3.1 Base Score 8.7 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N).
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Analysis
by VulDB Data Team • 09/16/2026
The identified vulnerability resides within the Oracle iStore component of Oracle E-Business Suite, specifically affecting versions ranging from 12.2.3 through 12.2.15. This security flaw is classified as a critical issue due to its potential for significant data compromise and unauthorized system modification. The vulnerability allows an attacker with low privileges who has network access via HTTP to exploit the weakness within the shopping cart functionality of the application. While the initial point of entry is limited in terms of required authentication, the nature of the flaw enables substantial lateral impact beyond the immediate component, indicating a scope change where attacks on Oracle iStore can significantly affect additional products within the broader E-Business Suite environment.
From a technical perspective, this vulnerability aligns with CWE-79, which covers Cross-Site Scripting (XSS) or similar injection flaws that allow for unauthorized data manipulation when user input is not properly sanitized before being processed by the application logic. The requirement for human interaction suggests that the exploit likely relies on social engineering tactics, such as tricking a legitimate user into clicking a malicious link or interacting with a compromised interface element. This characteristic maps directly to the ATT&CK technique of Valid Accounts and potentially Social Engineering, where an attacker leverages existing credentials but requires the victim's participation to trigger the exploitation chain. The low attack complexity indicates that once the human interaction occurs, the actual code execution or data access is straightforward for the adversary.
The operational impact of this vulnerability is severe, primarily targeting confidentiality and integrity rather than availability. Successful exploitation grants an attacker unauthorized creation, deletion, or modification capabilities over critical business data stored within Oracle iStore. This means sensitive customer information, transaction records, inventory details, and other proprietary data can be altered or exfiltrated without authorization. Furthermore, the vulnerability permits complete access to all data accessible by the Oracle iStore application, effectively bypassing intended security controls for lower-privileged users. The high confidentiality impact score reflects the risk of exposing sensitive personal identifiable information (PII) and financial records, while the high integrity impact highlights the danger of fraudulent transactions or tampered business logic that could disrupt operations and erode trust in the e-commerce platform.
Mitigation strategies must address both immediate remediation and long-term security posture improvements. Oracle has released patches for this vulnerability, so applying the latest available updates to all affected versions is the primary corrective action. Organizations should ensure their patch management processes are agile enough to deploy these fixes promptly across all instances of E-Business Suite 12.2.x. In addition to patching, implementing strict input validation and output encoding on any custom code or extensions interacting with the shopping cart module can help mitigate similar injection risks. Network-level controls such as Web Application Firewalls (WAF) should be configured to detect and block patterns associated with XSS or data exfiltration attempts targeting iStore endpoints.
Security awareness training is also crucial given the requirement for human interaction in this attack vector. Employees who interact with the shopping cart interface, including customer service representatives or internal users managing orders, must be educated on recognizing suspicious links or unusual requests that could lead to exploitation. Regular security audits and penetration testing focused on web application vulnerabilities will help identify similar weaknesses before they can be exploited by malicious actors. Monitoring logs for anomalous activities related to data creation, deletion, or modification within the iStore database can provide early detection of successful exploits, allowing for rapid incident response. By combining timely patching with robust defensive monitoring and user education, organizations can significantly reduce their exposure to this high-severity vulnerability in Oracle E-Business Suite.