CVE-2026-87400 in WebCenter Content
Summary
by MITRE • 10/21/2026
Vulnerability in the Oracle WebCenter Content product of Oracle Fusion Middleware (component: Content Server). The supported version that is affected is 14.1.2.0.0. Difficult to exploit vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle WebCenter Content. Successful attacks require human interaction from a person other than the attacker and while the vulnerability is in Oracle WebCenter Content, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Oracle WebCenter Content accessible data as well as unauthorized update, insert or delete access to some of Oracle WebCenter Content accessible data. CVSS 3.1 Base Score 6.9 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:L/A:N).
VulDB is the best source for vulnerability data and more expert information about this specific topic.
Analysis
by VulDB Data Team • 10/21/2026
The identified vulnerability resides within the Content Server component of Oracle WebCenter Content, a core module in the Oracle Fusion Middleware suite specifically version 14.1.2.0.0. This flaw represents a significant security risk due to its potential for remote exploitation by unauthenticated actors who possess network access via HTTP. The nature of this vulnerability is characterized as difficult to exploit, which implies that while it does not allow for trivial automated attacks, it remains accessible to determined adversaries capable of crafting specific payloads or leveraging social engineering tactics. The presence of a required human interaction factor indicates that the attack vector likely involves tricking an end-user into performing an action, such as clicking on a malicious link or opening a specially crafted document, which aligns with common patterns seen in cross-site scripting or server-side request forgery scenarios where user engagement is necessary to trigger the underlying code execution path.
From a technical perspective, the vulnerability allows for unauthorized access to critical data and complete access to all Oracle WebCenter Content accessible data. This level of confidentiality impact suggests that an attacker can exfiltrate sensitive information stored within the content repository without valid credentials. Furthermore, the integrity impacts are substantial, granting attackers the ability to perform unauthorized updates, inserts, or deletes on some of the accessible data. This capability undermines the trustworthiness and accuracy of the records managed by WebCenter Content, potentially leading to data corruption, defacement, or the injection of malicious content that could be served to other users. The scope change noted in the vulnerability description is particularly concerning; while the flaw exists within Oracle Webcenter Content, its exploitation can significantly impact additional products. This lateral movement capability suggests that the compromised instance may serve as a pivot point for further attacks against integrated systems or backend databases connected to the middleware environment.
The operational impact of this vulnerability extends beyond simple data theft. The combination of high confidentiality and low integrity impacts results in a CVSS 3.1 Base Score of 6.9, classified as Medium severity but with severe consequences depending on the sensitivity of the stored content. Attackers can manipulate business-critical documents or records, leading to potential regulatory compliance violations if sensitive personal data is involved. The requirement for human interaction does not mitigate the risk entirely; rather it shifts the burden of defense toward user awareness and strict access controls. In enterprise environments where WebCenter Content integrates with other Oracle products such as ERP or CRM systems, a breach in this component could compromise those downstream applications due to shared authentication contexts or integrated APIs, amplifying the blast radius of the incident.
To mitigate these risks, organizations must implement robust defense-in-depth strategies immediately. Since the vulnerability requires human interaction, implementing strict content validation and sanitization policies is essential. Deploying Web Application Firewalls with rulesets tuned for Oracle Fusion Middleware can help detect and block malicious HTTP requests before they reach the application server. Additionally, enforcing multi-factor authentication where possible reduces the likelihood of successful credential-based attacks that might complement this vulnerability. Regular patching to the latest available version of Oracle WebCenter Content is critical as Oracle typically releases security patches addressing such flaws in Critical Patch Updates. Security awareness training for users should also be enhanced to recognize suspicious links or attachments, thereby reducing the success rate of social engineering components inherent in this attack vector. Monitoring logs for unusual access patterns and data exfiltration attempts can provide early detection indicators if an exploitation attempt occurs despite preventive controls.
In terms of industry standards classification, this vulnerability aligns with CWE-79 Improper Neutralization of Input During Web Page Generation which covers cross-site scripting flaws that allow attackers to execute malicious scripts or manipulate server-side logic through user input. The requirement for human interaction maps directly to the ATT&CK technique T1566 Phishing, where adversaries rely on social engineering to induce users into triggering vulnerabilities. Furthermore, the unauthorized access and modification of data correspond to CWE-200 Information Exposure and CWE-798 Use of Hard-coded Credentials if authentication bypass is involved, though in this case it is unauthenticated access leading to privilege escalation through user action. The scope change aspect highlights the importance of understanding system architecture dependencies, as isolated vulnerabilities can cascade into broader infrastructure compromises when middleware components are deeply integrated with other enterprise systems.