CVE-2026-83036: Oracle Webcenter Portal

Critical severity, CVSS 9.8. EPSS: 0.5% chance of exploitation in the next 30 days.

Vulnerability in the Oracle WebCenter Sites product of Oracle Fusion Middleware (component: WebCenter Sites). 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 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).

Affected products

• Oracle Webcenter Portal: version 12.2.1.4.0 only; version 14.1.2.0.0 only

Published 2026-09-15. Last modified 2026-09-23.