CVE-2026-101389 in PeopleSoft Enterprise PeopleTools
Summary
by MITRE • 10/21/2026
Vulnerability in the PeopleSoft Enterprise PeopleTools product of Oracle PeopleSoft (component: Business Interlink). Supported versions that are affected are 8.61-8.63. Difficult to exploit vulnerability allows unauthenticated attacker with network access via HTTP to compromise PeopleSoft Enterprise PeopleTools. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of PeopleSoft Enterprise PeopleTools. CVSS 3.1 Base Score 5.9 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H).
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Analysis
by VulDB Data Team • 10/21/2026
The identified vulnerability resides within the Business Interlink component of Oracle PeopleSoft Enterprise PeopleTools, specifically affecting version ranges from 8.61 through 8.63. This security flaw is characterized by a difficult-to-exploit nature that nonetheless permits unauthenticated attackers to compromise the integrity and availability of the system via standard HTTP network access. The core technical issue involves improper input validation or resource management within the Business Interlink module, which allows an external actor to trigger conditions leading to service disruption without requiring valid credentials or user interaction. This classification highlights a critical gap in how the application handles specific malformed requests or state transitions during business logic processing, exposing the underlying infrastructure to remote abuse despite its inherent complexity for exploitation attempts.
From an operational perspective, the primary impact of this vulnerability is on system availability rather than confidentiality or integrity. Successful exploitation results in either a complete denial of service through frequent and repeatable crashes or a persistent hang condition that renders PeopleSoft Enterprise PeopleTools unresponsive to legitimate users. This disruption can halt critical business operations dependent on the platform, leading to significant downtime and potential data processing delays. The CVSS 3.1 base score of 5.9 reflects this medium-severity impact, emphasizing the high availability loss while acknowledging the high attack complexity that limits widespread automated exploitation. Organizations relying on these specific versions face a tangible risk of service interruption if attackers manage to bypass the inherent difficulties associated with crafting valid exploit payloads for this particular flaw.
In terms of industry standard classifications, this vulnerability aligns closely with CWE-400 Uncontrolled Resource Consumption or potentially CWE-20 Improper Input Validation depending on the exact mechanism causing the crash. The attack vector is categorized under ATT&CK technique T1496 Resource Hijacking if it leads to resource exhaustion, though more accurately it fits within general Denial of Service patterns where availability is compromised through application-level crashes rather than system-level resource depletion. The network access requirement and lack of authentication requirements place this firmly in the remote attack category, necessitating strict perimeter controls or internal segmentation strategies to mitigate exposure.
To address this vulnerability, immediate patching to a supported version outside the 8.61-8.63 range is the most effective remediation strategy provided by Oracle. In environments where upgrading is not immediately feasible, network-level mitigations should be implemented to restrict access to the Business Interlink endpoints from untrusted networks. Web Application Firewalls can be configured with specific rulesets to detect and block anomalous HTTP requests that exhibit patterns consistent with triggering this crash condition. Additionally, enabling detailed logging for PeopleTools components allows security teams to monitor for repeated failed attempts or unusual traffic spikes indicative of exploitation activity, facilitating rapid incident response before a complete service outage occurs. Regular vulnerability scanning focused on the specific component versions ensures ongoing visibility into exposure risks as new patches and updates become available from Oracle.