CVE-2026-101557 in Purchasing
Summary
by MITRE • 10/21/2026
Vulnerability in the Oracle Purchasing 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 Purchasing. Successful attacks of this vulnerability can result in takeover of Oracle Purchasing. CVSS 3.1 Base Score 8.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).
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Analysis
by VulDB Data Team • 10/21/2026
The identified vulnerability resides within the Internal Operations component of Oracle Purchasing, a critical module in the Oracle E-Business Suite ecosystem designed to manage procurement processes such as purchase orders and supplier management. This flaw affects supported software versions ranging from 12.2.3 through 12.2.15. The security issue is characterized by an easily exploitable condition that permits low-privileged attackers, who possess network access via the HTTP protocol, to compromise the integrity of the application environment. Because Oracle E-Business Suite often handles sensitive financial and operational data, a breach in this module poses significant risks to organizational confidentiality and business continuity.
From a technical perspective, the vulnerability allows an attacker with minimal authentication privileges to execute unauthorized actions that lead to a complete takeover of the Oracle Purchasing application. This level of compromise implies that the attacker can bypass existing access controls and potentially manipulate or exfiltrate data without detection by standard security monitoring tools. The ease of exploitation suggests that the flaw may involve insufficient input validation, improper authorization checks, or logic errors in how HTTP requests are processed within the internal operations layer. Such flaws often stem from complex business logic interactions where privilege escalation paths are not adequately restricted for lower-level user roles.
The operational impact of this vulnerability is severe, as indicated by a CVSS 3.1 Base Score of 8.8, which classifies it as High severity. The vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H) reveals that the attack requires no user interaction and has low complexity, while affecting confidentiality, integrity, and availability equally with high impact scores. A successful exploitation could allow an attacker to read sensitive procurement data, alter purchase orders or supplier information, or disrupt purchasing workflows entirely. This triad of impacts means that organizations face not only data leakage but also potential financial fraud through manipulated transactions and operational downtime due to system instability caused by the compromise.
In terms of industry standards mapping, this vulnerability aligns with CWE-269 Improper Privilege Management, as it involves a low-privileged user gaining higher-level control over application functions. It may also relate to CWE-862 Missing Authorization or CWE-79 Cross-site Scripting if the HTTP-based exploitation vector involves web interface manipulation. From an adversary behavior perspective, this aligns with MITRE ATT&CK techniques such as T1078 Valid Accounts for initial access and persistence, followed by T1053 Scheduled Task/Job or T1064 Privilege Escalation to maintain control over the compromised system components. The network-based nature of the attack via HTTP places it within remote exploitation categories typical of web application vulnerabilities found in enterprise resource planning systems.
To mitigate this risk, organizations running affected versions must apply the latest security patches provided by Oracle immediately. It is critical to verify that all instances of Oracle E-Business Suite 12.2.3 through 12.2.15 are updated to a version where this specific flaw in the Internal Operations component has been remediated. In addition to patching, administrators should enforce strict network segmentation to limit HTTP access to only necessary IP ranges and implement robust web application firewalls that can detect anomalous request patterns associated with privilege escalation attempts. Regular audits of user privileges within Oracle Purchasing are also recommended to ensure that low-privileged accounts do not possess unnecessary permissions that could be leveraged in conjunction with this vulnerability. Continuous monitoring for unusual activity related to purchase order modifications or supplier data changes will help identify potential exploitation attempts early.