CVE-2026-91478 in PeopleSoft Enterprise SCM Strategic Sourcing
Summary
by MITRE • 10/21/2026
Vulnerability in the PeopleSoft Enterprise SCM Strategic Sourcing product of Oracle PeopleSoft (component: Strategic Sourcing). The supported version that is affected is 9.2. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise PeopleSoft Enterprise SCM Strategic Sourcing. Successful attacks of this vulnerability can result in takeover of PeopleSoft Enterprise SCM Strategic Sourcing. 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 vulnerability identified in Oracle PeopleSoft Enterprise SCM Strategic Sourcing version 9.2 represents a critical security flaw within the strategic sourcing module of the broader ERP suite. This component is responsible for managing procurement processes, supplier relationships, and contract lifecycle management, making it a high-value target for attackers seeking to disrupt supply chain operations or exfiltrate sensitive commercial data. The affected system allows an attacker with low privileges who has network access via HTTP to exploit this weakness remotely without requiring user interaction. The severity of the issue is underscored by a CVSS 3.1 base score of 8.8, indicating high risk across all three pillars of information security: confidentiality, integrity, and availability. This scoring reflects that successful exploitation can lead to complete system compromise, allowing an attacker to take full control over the PeopleSoft application environment.
From a technical perspective, this vulnerability aligns with common patterns found in enterprise web applications where input validation or authentication mechanisms are insufficiently enforced for specific endpoints within the strategic sourcing module. The ability of a low-privileged user to escalate their access and achieve administrative-level control suggests a failure in role-based access controls or an insecure direct object reference that permits unauthorized actions on sensitive resources. Such flaws often stem from improper authorization checks during API calls or web form submissions, allowing malicious actors to bypass intended security boundaries. Because the attack vector is network-based via HTTP, it does not require physical proximity or local system access, significantly expanding the potential attack surface to any entity with connectivity to the application server.
The operational impact of this vulnerability is severe and multifaceted. With a confidentiality impact rated as high, attackers can potentially view sensitive procurement data, including contract terms, supplier pricing agreements, and proprietary business strategies held within the strategic sourcing database. The integrity impact being equally high means that an attacker could modify critical records, such as altering purchase orders, changing vendor payment details to facilitate fraud, or corrupting audit trails essential for regulatory compliance. Furthermore, the availability impact indicates that the vulnerability can be leveraged to disrupt service operations, potentially through denial-of-service conditions or by rendering the application unusable after unauthorized modifications. This triad of impacts poses a significant threat to business continuity and financial stability for organizations relying on this module for their supply chain management.
In terms of industry classification frameworks, this vulnerability is consistent with CWE-269 Improper Privilege Management and CWE-862 Missing Authorization, as it involves an actor gaining capabilities beyond what they are explicitly granted. The exploitation technique likely maps to MITRE ATT&CK techniques such as T1078 Valid Accounts for initial access using low-level credentials, followed by T1068 Exploitation for Privilege Escalation to gain higher privileges within the application layer. Additionally, if data is exfiltrated or modified, it may relate to T1530 Data from Cloud Storage or T1499 Endpoint Denial of Service depending on the specific exploitation method used against the underlying infrastructure. Understanding these mappings helps security teams prioritize remediation efforts based on established threat intelligence and attack patterns commonly observed in enterprise environments.
Mitigation strategies must focus on immediate patching and enhanced monitoring. Oracle should be consulted for the latest security patches that address this specific flaw within PeopleSoft Enterprise SCM Strategic Sourcing version 9.2, as vendor-provided fixes are typically designed to correct the underlying code logic responsible for the authorization bypass. In addition to applying updates, organizations should implement strict network segmentation to limit HTTP access to only necessary IP ranges and enforce multi-factor authentication where possible to reduce the risk of credential compromise leading to exploitation. Web Application Firewalls can be configured with rulesets specifically tuned to detect anomalous behavior patterns associated with privilege escalation attempts in strategic sourcing modules. Regular vulnerability assessments and penetration testing focused on role-based access controls will help identify similar weaknesses before they can be exploited by malicious actors, ensuring a more resilient security posture for critical business applications.