CVE-2026-87167 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 12.2.11-12.2.15. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise Oracle Purchasing. Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Oracle Purchasing accessible data as well as unauthorized access to critical data or complete access to all Oracle Purchasing 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).
Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.
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 12.2.11 through 12.2.15. This security flaw is classified as a high-severity issue with a CVSS 3.1 Base Score of 8.1, indicating significant risk to organizational data integrity and confidentiality. The vulnerability stems from an insufficient access control mechanism within the application logic that handles invoice processing and related financial transactions. Because the component processes sensitive purchasing data, any lapse in authorization checks can lead to severe consequences for enterprise resource planning operations.
An attacker with low privileges who has network access via HTTP can exploit this flaw without requiring user interaction or complex preconditions. The attack vector is remote and requires only a basic level of authentication, which makes it particularly dangerous as many internal users possess such credentials by default. Once authenticated, the adversary can manipulate input parameters to bypass intended security boundaries. This allows them to execute unauthorized operations that should be restricted to higher-privileged administrative accounts or specific business roles.
The operational impact of this vulnerability is substantial, encompassing both confidentiality and integrity breaches. Successful exploitation enables an attacker to create, delete, or modify critical financial data within the Oracle Purchasing module. This includes altering invoice details, fabricating fraudulent transactions, or deleting audit trails that are essential for compliance and forensic analysis. Furthermore, the flaw grants unauthorized access to sensitive corporate information, potentially exposing proprietary pricing strategies, vendor contracts, and employee payroll-related purchasing records. The ability to modify critical data undermines the reliability of financial reporting and can lead to significant monetary losses if not detected promptly.
From a classification perspective, this vulnerability aligns with CWE-269, which denotes Improper Privilege Management, as it allows users with lower privileges to perform actions reserved for higher levels. It also relates closely to CWE-862, the Missing Authorization check, where the application fails to verify if the authenticated user has the necessary permissions before executing a request. In terms of adversary tactics, this exploitation method corresponds to MITRE ATT&CK techniques involving Privilege Escalation and Data Manipulation, specifically within the context of financial systems abuse. Attackers often leverage such flaws during the initial access or persistence phases to establish control over critical business functions without triggering immediate alarms associated with high-level administrative changes.
Mitigation strategies must prioritize immediate patching by applying the latest security updates provided by Oracle for versions 12.2.11 through 12.2.15. Organizations should verify their current version and apply the relevant CPU or PSU patches that address this specific G-Invoicing flaw. In addition to software remediation, network segmentation is recommended to restrict HTTP access to the E-Business Suite environment from untrusted networks. Implementing strict input validation on all invoice-related endpoints can help mitigate similar logic flaws in future updates. Security teams should also enhance monitoring for anomalous activities such as bulk data modifications or unusual creation of financial records by low-privileged accounts, ensuring rapid detection and response capabilities are in place to minimize potential damage from exploitation attempts.