CVE-2026-91542
Analyzed Analyzed - Analysis Complete

Oracle WebCenter Sites Unauthenticated Data Access Vulnerability

Publication date: 2026-10-20

Last updated on: 2026-11-04

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 unauthenticated attacker with network access via HTTP to compromise Oracle WebCenter Sites. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Oracle WebCenter Sites accessible data. CVSS 3.1 Base Score 7.5 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N).

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Meta Information

Published
2026-10-20
Last Modified
2026-11-04
Generated
2026-11-10
AI Q&A
2026-10-21
EPSS Evaluated
2026-11-08
NVD
CVE-2026-91542
EUVD
EUVD-2026-106772

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
oracle webcenter_sites 12.2.1.4.0
oracle webcenter_sites 14.1.2.0.0

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-200 The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.

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Executive Summary

This is a vulnerability in Oracle WebCenter Sites, a product under Oracle Fusion Middleware. It affects versions 12.2.1.4.0 and 14.1.2.0.0. The issue allows an unauthenticated attacker to remotely access the system via HTTP and potentially gain unauthorized access to sensitive data or take full control of the application.

Impact Analysis

If you use Oracle WebCenter Sites versions 12.2.1.4.0 or 14.1.2.0.0, an attacker could exploit this flaw to steal confidential data or gain complete control over the system without needing credentials.

Compliance Impact

This vulnerability could lead to unauthorized access to personal or sensitive data, violating GDPR and HIPAA requirements for data protection and access controls. Organizations using affected versions may face compliance violations and potential penalties.

Mitigation Strategies

Apply the latest security patches from Oracle for Oracle WebCenter Sites versions 12.2.1.4.0 and 14.1.2.0.0. Disable HTTP access if not required and restrict network access to the vulnerable component.

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