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9.9
CVE-2026-83039: Oracle WebCenter Portal can be taken over remotely
CVE-2026-83039 · published 27 days ago
Summary
The Oracle WebCenter Portal component called Composer in versions 12.2.1.4.0 and 14.1.2.0.0 lets an attacker with basic network access gain full control of the portal. Apply the latest security updates from Oracle as soon as possible to block this risk.
What to do
The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.
Affected software
| Vendor | Product | Affected versions |
|---|---|---|
| oracle corporation | oracle webcenter portal | 12.2.1.4.0 |
Original advisory text
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 vuln...
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).
Internet-facing
14 days
Internal
At next upgrade
- Not known to be exploited
- Needs hands-on effort to exploit
- Gives an attacker full control
Type
CWE-284Improper Access Control
Timeline
Published15 Sep 2026
Updated11 Oct 2026
First seen15 Sep 2026
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