CVE-2026-61140 in WebCenter Sites
Summary
by MITRE • 07/22/2026
Vulnerability in the Oracle WebCenter Sites product of Oracle Fusion Middleware (component: WebCenter Sites). The supported version that is affected is 14.1.2.0.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle WebCenter Sites. Successful attacks of this vulnerability can result in takeover of Oracle WebCenter Sites. CVSS 3.1 Base Score 9.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).
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Analysis
by VulDB Data Team • 07/23/2026
This vulnerability exists within Oracle WebCenter Sites version 14.1.2.0.0, a component of Oracle Fusion Middleware that serves as a web content management and digital experience platform. The flaw represents a critical security weakness that affects the system's authentication mechanisms, allowing unauthorized attackers to gain full control over the affected web application without requiring any valid credentials or prior access privileges.
The technical implementation of this vulnerability stems from insufficient input validation and authentication controls within the HTTP request handling process of Oracle WebCenter Sites. Attackers can exploit this weakness by sending specially crafted HTTP requests directly to the vulnerable system, bypassing all standard authentication procedures and gaining administrative access to the entire platform. This type of vulnerability typically falls under CWE-287 which addresses improper authentication issues in software systems, and aligns with ATT&CK technique T1078 which covers valid accounts and legitimate credentials for unauthorized access.
The operational impact of this vulnerability is severe and comprehensive, as it provides attackers with complete system compromise capabilities. Successful exploitation can result in full administrative control over the Oracle WebCenter Sites environment, enabling unauthorized users to modify content, access sensitive data, alter system configurations, and potentially use the compromised platform as a launch point for further attacks against the broader network infrastructure. The CVSS 3.1 score of 9.8 reflects the high severity with impacts spanning confidentiality, integrity, and availability, indicating that attackers can achieve complete system takeover.
Organizations should immediately implement multiple layers of mitigation strategies to address this vulnerability. Primary recommendations include applying the latest security patches from Oracle as soon as they become available, implementing network-level restrictions such as firewalls to limit access to the affected system, and conducting thorough network segmentation to isolate the vulnerable component. Additionally, organizations should enable comprehensive monitoring and logging of HTTP traffic to detect anomalous access patterns, implement strong access controls for administrative interfaces, and consider deploying intrusion detection systems to identify potential exploitation attempts. The vulnerability also highlights the critical importance of maintaining current security posture through regular vulnerability assessments and penetration testing to identify similar weaknesses in other system components.