CVE-2026-73956: Critical severity Oracle Oracle WebCenter Portal vulnerability

Q: Which deployments are affected?

Affected supported versions are Oracle WebCenter Portal 12.2.1.4.0 and 14.1.2.0.0, specifically the Composer component.

Q: Does an attacker need credentials or user interaction?

No. The vulnerability is exploitable by an unauthenticated attacker with network access over HTTP, and it requires no user interaction.

Q: What is the likely impact of successful exploitation?

Successful exploitation can result in takeover of Oracle WebCenter Portal, with high confidentiality, integrity, and availability impact.

Published Sep 15, 2026

Updated

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 unauthenticated attacker with network access via HTTP to compromise Oracle WebCenter Portal. Successful attacks of this vulnerability can result in takeover of Oracle WebCenter Portal. 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 Software

3 affected components

Oracle Oracle WebCenter Portal>=12.2.1.4.0<=12.2.1.4.0, >=14.1.2.0.0<=14.1.2.0.0

Oracle WebCenter Portal=12.2.1.4.0

Oracle WebCenter Portal=14.1.2.0.0

Event History

Sep 15, 2026

CVE Published

via MITRE·08:02 PM

Data Sourced

via MITRE·08:02 PM

DescriptionSeverity

Data Sourced

via NVD·08:17 PM

DescriptionSeverityWeaknessAffected Software

Frequently Asked Questions

Which deployments are affected?

Affected supported versions are Oracle WebCenter Portal 12.2.1.4.0 and 14.1.2.0.0, specifically the Composer component.

Does an attacker need credentials or user interaction?

No. The vulnerability is exploitable by an unauthenticated attacker with network access over HTTP, and it requires no user interaction.

What is the likely impact of successful exploitation?