CVE-2026-73952 in WebCenter Portal
Summary
by MITRE • 09/15/2026
Vulnerability in the Oracle WebCenter Portal product of Oracle Fusion Middleware (component: Portlet Services). Supported versions that are affected are 12.2.1.4.0 and 14.1.2.0.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle WebCenter Portal. Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Oracle WebCenter Portal accessible data as well as unauthorized access to critical data or complete access to all Oracle WebCenter Portal accessible data. CVSS 3.1 Base Score 9.1 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N).
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Analysis
by VulDB Data Team • 09/16/2026
The identified vulnerability resides within the Portlet Services component of Oracle WebCenter Portal, a key element of the Oracle Fusion Middleware suite affecting versions 12.2.1.4.0 and 14.1.2.0.0. This security flaw is characterized by its high severity, with a CVSS 3.1 Base Score of 9.1, indicating critical risk to confidentiality and integrity while having no impact on availability. The vulnerability allows for exploitation by an unauthenticated attacker who requires only network access via HTTP to initiate the attack vector. This low barrier to entry significantly increases the likelihood of successful compromise in environments where WebCenter Portal is exposed to internal or external networks without sufficient perimeter controls.
From a technical perspective, the flaw enables unauthorized creation, deletion, or modification of critical data within the application context. More critically, it grants attackers the ability to access sensitive information that should be restricted by authentication and authorization mechanisms. The absence of required privileges for exploitation means that any user with network connectivity can potentially bypass security controls entirely. This aligns closely with CWE-287, which describes Improper Authentication, as well as CWE-269, indicating an elevation of privilege where the attacker gains capabilities beyond their intended scope without valid credentials. The specific impact on data integrity and confidentiality suggests that the vulnerability may involve insecure direct object references or broken access control mechanisms within the portlet rendering logic.
The operational impact of this vulnerability is severe for organizations relying on Oracle WebCenter Portal for content management, collaboration, or enterprise application integration. Successful exploitation could lead to a complete compromise of accessible data, including personal identifiable information, proprietary business documents, and system configurations. Attackers could manipulate critical records, delete essential datasets, or inject malicious content that persists in the portal environment. This level of access undermines trust in the platform and can result in significant regulatory compliance violations under frameworks such as GDPR, HIPAA, or PCI-DSS due to unauthorized data exposure. Furthermore, the ability to modify data introduces risks related to business logic manipulation and potential downstream attacks through trusted relationships with other integrated systems.
In terms of threat modeling, this vulnerability maps directly to MITRE ATT&CK technique T1078, Valid Accounts, specifically in scenarios where default or weak credentials are exploited due to authentication bypasses, although the unauthenticated nature suggests a more fundamental flaw akin to T1190, Exploit Public-Facing Application. The attack vector being network-accessible via HTTP highlights the importance of secure configuration practices for web-facing services. Organizations must recognize that even without user interaction or complex social engineering, this vulnerability can be automated and scaled across large networks rapidly.
Mitigation strategies should prioritize immediate patching to the latest available version provided by Oracle, which addresses the underlying code defects in Portlet Services. Until patches are applied, network-level controls such as Web Application Firewalls (WAF) should be configured to detect and block exploit patterns associated with this vulnerability. Access control lists must restrict HTTP access to only authorized IP ranges if possible, ensuring that the service is not exposed directly to untrusted networks. Additionally, implementing strict input validation and output encoding on any custom portlets or integrations can help mitigate similar flaws in related components. Regular security assessments and penetration testing focused on authentication bypasses are recommended to identify residual risks within the broader Fusion Middleware ecosystem.