CVE-2026-91331 in PeopleSoft Enterprise CC Common Application Objects
Summary
by MITRE • 10/21/2026
Vulnerability in the PeopleSoft Enterprise CC Common Application Objects product of Oracle PeopleSoft (component: Common Application Objects). The supported version that is affected is 9.2. Easily exploitable vulnerability allows high privileged attacker with network access via HTTP to compromise PeopleSoft Enterprise CC Common Application Objects. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of PeopleSoft Enterprise CC Common Application Objects accessible data as well as unauthorized read access to a subset of PeopleSoft Enterprise CC Common Application Objects accessible data. CVSS 3.1 Base Score 3.8 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N).
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Analysis
by VulDB Data Team • 10/21/2026
The vulnerability identified in Oracle PeopleSoft Enterprise CC Common Application Objects, specifically within version 9.2, represents a significant integrity and confidentiality risk for organizations relying on this enterprise resource planning platform. The affected component serves as the foundational layer for many business processes within the PeopleSoft ecosystem, handling core application logic and data manipulation routines. Because it is exposed via HTTP with low attack complexity and requires no user interaction, the vulnerability presents an attractive target for adversaries who have already gained a foothold in the network or possess high-privileged credentials. The existence of this flaw underscores the critical importance of maintaining strict access controls and ensuring that only authorized personnel with elevated privileges can interact with these core application objects, as the barrier to exploitation is minimal once initial authentication is achieved.
From a technical perspective, the flaw allows an attacker who has successfully authenticated with high-level privileges to manipulate data within the Common Application Objects without proper authorization checks or input validation mechanisms being enforced correctly during HTTP requests. This lack of robust security controls enables unauthorized operations such as updates, inserts, and deletes against accessible data sets. Furthermore, the vulnerability extends beyond mere modification capabilities by permitting unauthorized read access to a subset of sensitive information stored within these objects. The ability to both alter and exfiltrate data indicates that the underlying code likely fails to enforce strict separation between administrative functions and standard user operations, or it contains logic errors in how privilege levels are validated before executing database commands. This dual impact on confidentiality and integrity aligns with common patterns found in complex enterprise applications where legacy code paths may not adhere to modern security standards regarding data access control.
The operational impact of this vulnerability is substantial for any organization running PeopleSoft version 9.2, as it directly compromises the trustworthiness of business-critical data. Unauthorized updates can lead to corrupted financial records, incorrect inventory levels, or flawed human resources data, which may result in significant financial loss and regulatory non-compliance. Similarly, unauthorized inserts could allow attackers to inject malicious configurations or fake transactions into the system, further complicating forensic investigations and audit trails. The ability to read sensitive data exacerbates the risk by enabling information disclosure that can be leveraged for subsequent attacks, such as social engineering or targeted phishing campaigns against other users within the organization. Given that the attack vector is network-based via HTTP, remote attackers with high privileges can exploit this flaw without needing physical access or complex setup procedures, making it a persistent threat to system stability and data integrity.
In terms of industry classification standards, this vulnerability maps closely to CWE-269 Improper Privilege Management, as the core issue stems from insufficient enforcement of privilege boundaries allowing actions that should be restricted for certain user roles. Additionally, because the exploitation involves modifying or deleting data through network access, it relates to CWE-732 Incorrect Permission Assignment for Critical Resource and CWE-862 Missing Authorization. From a tactical standpoint within the MITRE ATT&CK framework, this vulnerability facilitates techniques associated with Data Manipulation under the Impact tactic, specifically T1565 Stored Data Manipulation or T1048 Exfiltration Over Alternative Protocol if data is being read out. The low attack complexity and lack of user interaction mean that once an attacker achieves high-privileged access through other means, such as credential theft or privilege escalation, this vulnerability serves as a reliable mechanism for achieving persistent control over critical business data.
Mitigation strategies must focus on both immediate remediation and long-term architectural improvements. Oracle has likely released patches addressing these specific flaws in the Common Application Objects component; therefore, applying the latest security updates is the primary defense. Organizations should verify their current version status against Oracle’s official advisories to ensure they are running a patched release of PeopleSoft Enterprise CC 9.2 or higher where applicable. In addition to patching, implementing strict network segmentation can limit exposure by restricting HTTP access to these components only from trusted management networks rather than the general corporate LAN or internet-facing DMZs. Role-based access control should be rigorously audited to ensure that high-privileged accounts are used exclusively for administrative tasks and not for routine business operations, thereby reducing the attack surface available to potential intruders who may have compromised lower-level credentials. Regular vulnerability scanning focused on web application security principles will help identify similar misconfigurations in other parts of the PeopleSoft environment before they can be exploited.