---
id: CVE-2026-91502
title: >-
  Vulnerability in the Oracle WebLogic Server product of Oracle Fusion
  Middleware (component: Core)
summary: >-
  Vulnerability in the Oracle WebLogic Server product of Oracle Fusion
  Middleware (component: Core).  Supported versions that are affected are
  12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0 and  15.1.1.0.0. Easily exploitable
  vulnerability allows unau…
severity: high
cvss: 7.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L'
cvssSource: cna
vendor: Oracle Corporation
product: Oracle WebLogic Server
affected:
  - oracle_weblogic_server 12.2.1.4.0
  - oracle_weblogic_server 14.1.1.0.0
  - oracle_weblogic_server 14.1.2.0.0
  - oracle_weblogic_server 15.1.1.0.0
published: '2026-10-20'
updated: '2026-10-20'
sourceUpdated: '2026-10-20T21:26:18.295Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-91502'
references:
  - url: 'https://www.oracle.com/security-alerts/cpuoct2026.html'
    label: Oracle Advisory
tags:
  - cve.org
ingestedAt: '2026-10-20T22:23:33.738Z'
---

## Overview

Vulnerability in the Oracle WebLogic Server product of Oracle Fusion Middleware (component: Core).  Supported versions that are affected are 12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0 and  15.1.1.0.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via TLS to compromise Oracle WebLogic Server.  Successful attacks of this vulnerability can result in  unauthorized update, insert or delete access to some of Oracle WebLogic Server accessible data as well as  unauthorized read access to a subset of Oracle WebLogic Server accessible data and unauthorized ability to cause a partial denial of service (partial DOS) of Oracle WebLogic Server. CVSS 3.1 Base Score 7.3 (Confidentiality, Integrity and Availability impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L).

## Affected

- `oracle_weblogic_server 12.2.1.4.0`
- `oracle_weblogic_server 14.1.1.0.0`
- `oracle_weblogic_server 14.1.2.0.0`
- `oracle_weblogic_server 15.1.1.0.0`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.