CVE-2026-101491 in PeopleSoft Enterprise PeopleTools
Summary
by MITRE • 10/21/2026
Vulnerability in the PeopleSoft Enterprise PeopleTools product of Oracle PeopleSoft (component: Query). Supported versions that are affected are 8.61-8.63. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise PeopleSoft Enterprise PeopleTools. While the vulnerability is in PeopleSoft Enterprise PeopleTools, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in unauthorized read access to a subset of PeopleSoft Enterprise PeopleTools accessible data. CVSS 3.1 Base Score 5.0 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N).
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Analysis
by VulDB Data Team • 10/22/2026
The identified vulnerability resides within the Query component of Oracle PeopleSoft Enterprise PeopleTools, specifically affecting versions ranging from 8.61 through 8.63. This security flaw represents a significant risk to organizations relying on these specific releases for their enterprise resource planning and human capital management operations. The core issue stems from an improper access control mechanism that fails to adequately restrict data retrieval permissions based on the user's privilege level or intended scope of operation. Consequently, individuals who possess only low-level privileges are able to bypass standard authorization checks when interacting with the query functionality over HTTP protocols. This misconfiguration allows attackers to execute unauthorized queries against the underlying database structures, effectively circumventing the security boundaries designed to isolate sensitive information from lower-tier users.
From a technical perspective, this vulnerability is classified as an insecure direct object reference or broken access control issue, aligning closely with CWE-264 in the Common Weakness Enumeration taxonomy. The exploitation vector requires network accessibility via HTTP and does not necessitate user interaction, making it particularly dangerous for systems exposed to internal networks or the internet without sufficient perimeter security controls. An attacker can leverage this flaw by crafting specific HTTP requests that target vulnerable query endpoints. By manipulating parameters within these requests, the adversary can retrieve data sets that should remain restricted to administrators or higher-privileged roles. The successful exploitation results in unauthorized read access to a subset of PeopleSoft Enterprise PeopleTools accessible data, leading to a confidentiality impact as defined by the CVSS 3.1 scoring system which assigns this vulnerability a base score of 5.0 due to its low complexity and network-based nature.
The operational impact extends beyond the immediate component where the flaw exists. Although the technical defect is located within PeopleTools, the cascading effects can significantly compromise additional products integrated with or dependent on PeopleSoft Enterprise data structures. This scope change implies that sensitive information such as employee records, financial transactions, or proprietary business metrics may be exposed to unauthorized parties. Such exposure violates fundamental principles of data integrity and confidentiality, potentially leading to regulatory non-compliance under frameworks like GDPR or HIPAA if personal identifiable information is involved. Furthermore, the ability for low-privileged users to access restricted data undermines trust in the system's security model and can serve as a foothold for more sophisticated attacks, including privilege escalation or further lateral movement within the network environment.
In terms of threat modeling, this vulnerability maps to techniques observed in the MITRE ATT&CK framework, particularly those related to Collection via Client-side Scripting or Unsecured Credentials if combined with other factors, but primarily it reflects unauthorized access patterns associated with T1078 Valid Accounts when exploited by legitimate users with insufficient privileges. The lack of proper validation on input parameters allows for data exfiltration without triggering typical intrusion detection alerts designed to flag high-privilege anomalies. Organizations must recognize that even low-severity scores like 5.0 can have disproportionate business impacts depending on the sensitivity of the exposed data and the ease of exploitation by internal or external actors with basic network access.
To mitigate this risk, immediate action is required to apply the latest security patches provided by Oracle for PeopleSoft Enterprise PeopleTools versions 8.61 through 8.63. Patching addresses the underlying code defects that allow unauthorized query execution and restores proper access control logic. In addition to applying vendor-supplied updates, organizations should implement network segmentation strategies to limit HTTP access to critical application servers from untrusted zones. Web Application Firewalls can be configured with specific rulesets to detect and block anomalous query patterns indicative of this exploitation technique. Regular audits of user permissions are also essential to ensure that the principle of least privilege is strictly enforced across all PeopleSoft modules, reducing the attack surface available to low-privileged users who might attempt to exploit similar weaknesses in other components. Continuous monitoring for unusual data access patterns can provide early warning signs of potential compromise before significant damage occurs.