CVE-2026-83031

Analyzed Analyzed - Analysis Complete

Remote Code Execution in Oracle WebCenter Sites

Publication date: 2026-09-15

Last updated on: 2026-09-23

Assigner: Oracle

Description

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 low privileged attacker with network access via HTTP to compromise Oracle WebCenter Sites. While the vulnerability is in Oracle WebCenter Sites, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in takeover of Oracle WebCenter Sites. 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).

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-09-15

Last Modified

2026-09-23

Generated

2026-10-06

AI Q&A

2026-09-16

EPSS Evaluated

2026-10-04

NVD

CVE-2026-83031

EUVD

EUVD-2026-79359

Affected Vendors & Products

Vendor	Product	Version / Range
oracle	webcenter_portal	12.2.1.4.0
oracle	webcenter_portal	14.1.2.0.0

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-UNKNOWN

Attack-Flow Graph

Executive Summary

This is a critical vulnerability in Oracle WebCenter Sites, a web content management system. It allows a low-privileged attacker with network access to take over the entire system. The flaw has a CVSS score of 9.9, indicating severe impact on confidentiality, integrity, and availability.

Detection Guidance

This vulnerability affects Oracle WebCenter Sites versions 12.2.1.4.0 and 14.1.2.0.0. Detection requires checking for vulnerable versions of Oracle WebCenter Sites installed on your system. Review installed software versions and compare them against the affected versions listed in the CVE description.

Impact Analysis

An attacker could exploit this to gain full control of Oracle WebCenter Sites, potentially leading to data theft, unauthorized modifications, or service disruption. Since attacks may impact additional products, the risk could extend beyond the primary system.

Compliance Impact

This vulnerability could lead to unauthorized access or data breaches, violating GDPR (data protection) and HIPAA (health information privacy). Non-compliance may result in legal penalties, fines, or reputational damage due to compromised sensitive data.

Mitigation Strategies

Apply the latest Oracle Critical Patch Update for Oracle WebCenter Sites immediately. Ensure network access controls restrict HTTP access to only trusted sources. Monitor for unauthorized changes to WebCenter Sites configurations or files.

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