---
id: "CVE-2026-91231"
kind: "vulnerability"
aliases: ["CVE-2026-91231"]
title: "Oracle SOA Suite Adapters: unauthenticated network takeover of the server"
severity: "critical"
cvss: 10.0
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: []
ecosystems: []
tags: ["infrastructure", "oracle-fusion-middleware", "oracle-soa-suite", "other", "self-hosted"]
not_affected_if: ["other-versions"]
published_at: "2026-10-20T22:20:23+00:00"
first_seen_at: "2026-10-23T21:57:26+00:00"
updated_at: "2026-10-23T22:34:21+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-91231", "first_seen_at": "2026-10-23T21:57:26+00:00"}]
---

# Oracle SOA Suite Adapters: unauthenticated network takeover of the server

Oracle SOA Suite's Adapters component has a flaw that an unauthenticated attacker can reach over HTTP. Successful attacks take over the SOA Suite server and can affect other products on it.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

Check whether Oracle SOA Suite 12.2.1.4.0 or 14.1.2.0.0 is installed, for example in the Fusion Middleware home or the WebLogic console.

## Fix

Apply the Oracle Critical Patch Update fix for CVE-2026-91231 for your version; the exact patch id is unknown from the sources.

## Timeline

- 2026-10-23T21:57:26+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-91231

## From the sources

Vulnerability in the Oracle SOA Suite product of Oracle Fusion Middleware (component: Adapters).  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 SOA Suite.  While the vulnerability is in Oracle SOA Suite, attacks may significantly impact additional products (scope change).  Successful attacks of this vulnerability can result in takeover of Oracle SOA Suite. CVSS 3.1 Base Score 10.0 (Confidentiality, Integrity and Availability impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H).

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_