CVE-2026-83039: Critical severity Oracle Oracle WebCenter Portal vulnerability
Vulnerability in the Oracle WebCenter Portal product of Oracle Fusion Middleware (component: Composer). Supported versions that are affected are 12.2.1.4.0 and 14.1.2.0.0. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise Oracle WebCenter Portal. While the vulnerability is in Oracle WebCenter Portal, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in takeover of Oracle WebCenter Portal. CVSS 3.1 Base Score 9.9 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H).
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Compensating control
Apply compensating network controls for Oracle WebCenter Portal so HTTP access is limited/restricted (e.g., restrict inbound HTTP to trusted sources) to mitigate the AV:N attack vector until the vendor fix is applied.
Event History
Frequently Asked Questions
Which deployments are affected?
The affected supported Oracle WebCenter Portal versions are 12.2.1.4.0 and 14.1.2.0.0, specifically in the Composer component.
What level of access does an attacker need?
An attacker needs network access to the target over HTTP and low-privileged credentials. No user interaction is required, and the vulnerability is rated low complexity to exploit.
What could a successful attacker achieve?
Successful exploitation can result in takeover of Oracle WebCenter Portal, with high impact to confidentiality, integrity, and availability. The scope can extend beyond WebCenter Portal and significantly affect additional products.