CVE-2026-83379
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Remote Code Execution in Oracle WebLogic Server Proxy Plug-in

Publication date: 2026-10-20

Last updated on: 2026-10-27

Assigner: Oracle

Description
Vulnerability in the Oracle Weblogic Server Proxy Plug-in product of Oracle Fusion Middleware (component: WebLogic Server Proxy Plug-In for Third-Party Web Servers). Supported versions that are affected are 12.2.1.4.0, 14.1.1.0.0 and 14.1.2.0.0. Difficult to exploit vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle Weblogic Server Proxy Plug-in. While the vulnerability is in Oracle Weblogic Server Proxy Plug-in, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Oracle Weblogic Server Proxy Plug-in accessible data as well as unauthorized access to critical data or complete access to all Oracle Weblogic Server Proxy Plug-in accessible data. CVSS 3.1 Base Score 8.7 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N).

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Meta Information

Published
2026-10-20
Last Modified
2026-10-27
Generated
2026-11-10
AI Q&A
2026-10-21
EPSS Evaluated
2026-11-08
NVD
CVE-2026-83379
EUVD
EUVD-2026-106297

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-284 The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

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Executive Summary

This is a vulnerability in Oracle WebLogic Server Proxy Plug-in versions 12.2.1.4.0, 14.1.1.0.0, and 14.1.2.0.0. It allows an unauthenticated attacker with network access via HTTP to compromise the plug-in. Successful exploitation can lead to unauthorized data creation, deletion, modification, or full access to all data accessible by the plug-in.

Impact Analysis

An attacker could gain unauthorized access to critical data, modify or delete data, or create new data within systems using the affected Oracle WebLogic Server Proxy Plug-in. This could disrupt services, lead to data breaches, or allow further attacks on connected systems.

Compliance Impact

This vulnerability could lead to unauthorized access or modification of sensitive data, violating GDPR (data confidentiality) and HIPAA (protected health information integrity). Non-compliance risks include legal penalties, fines, and reputational damage.

Mitigation Strategies

Apply the latest security patches from Oracle for affected versions of WebLogic Server Proxy Plug-in (12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0).

Restrict network access to the WebLogic Server Proxy Plug-in via HTTP to trusted sources only.

Monitor network traffic for unusual HTTP requests targeting the plug-in.

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