CVE-2026-91504 in WebCenter Content
Summary
by MITRE • 10/21/2026
Vulnerability in the Oracle WebCenter Content product of Oracle Fusion Middleware (component: Content Portal Suite). Supported versions that are affected are 12.2.1.4.0 and 14.1.2.0.0. Difficult to exploit vulnerability allows low privileged attacker with network access via HTTP to compromise Oracle WebCenter Content. Successful attacks of this vulnerability can result in takeover of Oracle WebCenter Content. CVSS 3.1 Base Score 7.5 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H).
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Analysis
by VulDB Data Team • 10/21/2026
The identified vulnerability resides within the Content Portal Suite component of Oracle WebCenter Content, a core part of the Oracle Fusion Middleware suite used for managing unstructured content and facilitating collaboration. This security flaw affects specific supported versions including 12.2.1.4.0 and 14.1.2.0.0, indicating that even recently patched or maintained releases are susceptible to this issue. The nature of the vulnerability is characterized as difficult to exploit, which suggests a complex attack vector requiring precise conditions or specific sequences of actions to trigger successfully. Despite this high barrier to exploitation, the potential impact is severe, allowing an attacker with low privileges and network access via HTTP to compromise the integrity and availability of the system.
From a technical perspective, the flaw likely involves improper validation or handling of user-supplied input within the Content Portal Suite interface. While the exact mechanism is not detailed in the summary, vulnerabilities leading to full takeover typically stem from issues such as insecure direct object references, broken access control mechanisms, or injection flaws that allow an authenticated but low-privileged user to escalate their privileges or execute arbitrary commands on the underlying server infrastructure. The requirement for network access via HTTP implies that the attack surface is exposed over standard web protocols, making it potentially accessible to remote attackers who have established a foothold within the internal network or through compromised credentials with minimal permissions.
The operational impact of this vulnerability is critical, as indicated by the CVSS 3.1 Base Score of 7.5, which classifies it as High severity. The vector string (CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H) reveals that while the attack complexity is high and requires low privileges, there are no user interactions required, and the scope remains unchanged. However, the impacts on confidentiality, integrity, and availability are all rated as High. This means a successful exploit could lead to complete system takeover, allowing an attacker to read sensitive data, modify critical configurations or content, and disrupt service for other users. Such outcomes align with CWE-269 Improper Privilege Management and potentially CWE-78 OS Command Injection if the takeover involves executing commands on the host operating system.
In terms of threat modeling, this vulnerability maps to ATT&CK techniques related to Initial Access via Valid Accounts and subsequent Lateral Movement or Privilege Escalation within the Oracle WebCenter Content environment. Attackers could leverage this flaw to pivot from a low-level user account to an administrative role, thereby gaining control over content repositories, workflows, and integration points with other enterprise systems. The lack of required user interaction further increases the risk profile, as automated scripts or persistent backdoors could be deployed without triggering typical behavioral alerts associated with manual exploitation attempts.
Mitigation strategies should prioritize immediate patching by applying the latest security patches provided by Oracle for versions 12.2.1.4.0 and 14.1.2.0.0. Organizations must ensure that their update management processes are agile enough to deploy these fixes promptly, given the high severity of the issue. In addition to patching, implementing strict network segmentation is crucial; Oracle WebCenter Content should not be directly exposed to untrusted networks via HTTP without robust perimeter defenses such as web application firewalls configured with rulesets specific to Oracle middleware vulnerabilities. Access controls must also be reviewed to ensure that low-privileged accounts have the minimum necessary permissions, reducing the potential impact if an account is compromised. Regular auditing of user activities and monitoring for anomalous behavior can help detect exploitation attempts early, limiting the window of opportunity for attackers to escalate privileges or exfiltrate data.