Is CVE-2026-83039 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-83039 being exploited in the wild.

How severe is CVE-2026-83039?

Critical severity, with a CVSS score of 9.9, published 15 September 2026.

Which products and versions are affected?

Oracle WebCenter Portal 12.2.1.4.0, 14.1.2.0.0.

Is there a fix for CVE-2026-83039?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-83039 attacked?

It is attacked over the network, in a web application.

Am I affected by CVE-2026-83039?

Check whether you run Oracle WebCenter Portal at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-83039: Oracle WebCenter Portal privilege escalation in Composer

CVE-2026-83039 · Severity: critical · CVSS 9.9 · Published 2026-09-15

Oracle WebCenter Portal is a web-based portal and collaboration platform used to build business applications and content management systems within enterprises. A vulnerability in the Composer component allows a low-privileged attacker with network access to gain full administrative control over the portal and potentially compromise connected systems. This could lead to unauthorized access to sensitive business data, disruption of critical portal services, and lateral movement to other enterprise systems.

Technologies: Oracle WebCenter Portal. Vendors: Oracle.

Quick answers

Is CVE-2026-83039 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-83039 being exploited in the wild.
How severe is CVE-2026-83039?: Critical severity, with a CVSS score of 9.9, published 15 September 2026.
Which products and versions are affected?: Oracle WebCenter Portal 12.2.1.4.0, 14.1.2.0.0.
Is there a fix for CVE-2026-83039?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-83039 attacked?: It is attacked over the network, in a web application.
Am I affected by CVE-2026-83039?: Check whether you run Oracle WebCenter Portal at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

This vulnerability in the Oracle WebCenter Portal Composer component is easily exploitable via HTTP by an attacker with low privilege credentials and network access. The vulnerability results in a scope change, meaning successful exploitation can impact systems beyond the portal itself. An attacker can achieve complete compromise of the WebCenter Portal application, resulting in confidentiality, integrity, and availability impacts. The affected versions are 12.2.1.4.0 and 14.1.2.0.0. Patch availability and specific technical remediation details are not confirmed from the provided advisory.

Affected products

Oracle WebCenter Portal 12.2.1.4.0, 14.1.2.0.0

Timeline

2026-09-15: disclosed

References

https://www.oracle.com/security-alerts/cspusep2026.html

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