CVE-2026-87127 in Purchasing
Summary
by MITRE • 09/16/2026
Vulnerability in the Oracle Purchasing product of Oracle E-Business Suite (component: G-Invoicing). Supported versions that are affected are 12.2.10-12.2.15. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise Oracle Purchasing. While the vulnerability is in Oracle Purchasing, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Oracle Purchasing accessible data. CVSS 3.1 Base Score 7.7 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N).
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Analysis
by VulDB Data Team • 09/16/2026
The identified vulnerability resides within the G-Invoicing component of Oracle E-Business Suite, specifically affecting supported versions ranging from 12.2.10 through 12.2.15. This security flaw is classified as a critical issue due to its potential for unauthorized access to sensitive organizational data. The root cause typically involves insufficient validation or sanitization mechanisms within the HTTP request handling logic of the G-Invoicing module, allowing an attacker to manipulate input parameters in ways that bypass intended authorization checks. Although the vulnerability is technically located in Oracle Purchasing, the interconnected nature of E-Business Suite modules means that compromising this component can lead to a scope change, potentially impacting adjacent applications and services within the broader suite architecture.
From a technical perspective, the flaw permits low-privileged attackers who possess network access via HTTP to exploit the system without requiring user interaction or complex preconditions. The attack vector is classified as remote with low complexity, meaning that an attacker does not need specialized skills or physical proximity to execute the exploitation. Once triggered, the vulnerability allows for unauthorized access to critical data stored within the Oracle Purchasing database. This includes sensitive financial records, vendor information, purchase orders, and invoice details which are essential for business operations but also represent high-value targets for espionage or fraud. The impact is primarily focused on confidentiality, as indicated by the CVSS 3.1 base score of 7.7, with a specific emphasis on high impacts to data integrity being absent in this particular vector description, though the potential for subsequent manipulation cannot be entirely ruled out given the level of access granted.
The operational impact of this vulnerability is significant for organizations relying on Oracle E-Business Suite for their procurement and financial processes. Successful exploitation can lead to a complete compromise of all accessible purchasing data, enabling attackers to exfiltrate confidential business intelligence or use the compromised system as a pivot point for further lateral movement within the corporate network. This aligns with common threat actor behaviors where initial access is gained through web application vulnerabilities to establish persistence and gather reconnaissance data before executing more destructive actions such as ransomware deployment or financial fraud. The lack of user interface requirements simplifies automated exploitation, increasing the likelihood of widespread compromise if left unpatched.
To mitigate this risk, organizations must immediately apply the latest security patches provided by Oracle for versions 12.2.10 through 12.2.15. It is crucial to verify that all affected components are updated and that any customizations or extensions do not reintroduce vulnerable code paths. Additionally, implementing network segmentation can help limit exposure by restricting HTTP access to the G-Invoicing module only from trusted internal subnets rather than exposing it directly to untrusted networks. Web Application Firewalls should be configured with rules specifically targeting injection patterns associated with this vulnerability class, such as SQL injection or cross-site scripting vectors that often accompany authentication bypass flaws. Regular security audits and penetration testing focused on the E-Business Suite environment are recommended to identify any residual weaknesses or misconfigurations that could facilitate exploitation despite patching efforts.
This incident underscores the importance of maintaining strict access controls and continuous monitoring for anomalies in web application traffic targeting enterprise resource planning systems. The vulnerability maps closely to CWE-287, which describes Improper Authentication, as well as CWE-918, Server-Side Request Forgery if the exploitation involves leveraging server-side processing of untrusted data. In terms of adversary tactics, this aligns with MITRE ATT&CK technique T1059, Command and Scripting Interpreter, or more likely T1190, Exploit Public-Facing Application, depending on whether the attacker uses automated scripts to probe for the flaw. Ensuring that all public-facing interfaces are hardened against such exploits is a critical component of maintaining the integrity and confidentiality of enterprise data assets in modern IT environments.