---
id: "CVE-2026-101520"
kind: "vulnerability"
aliases: ["CVE-2026-101520"]
title: "Oracle OUI Framework: unauthenticated HTTP request can crash installer service"
severity: "high"
cvss: 7.5
epss: null
exploited: false
status: "open"
category: "vendor"
products: []
ecosystems: []
tags: ["fusion-middleware", "oracle", "oracle-lifecycle-management", "vendor"]
not_affected_if: ["installer-not-deployed", "network-restricted"]
published_at: "2026-10-20T22:18:01+00:00"
first_seen_at: "2026-10-23T21:57:22+00:00"
updated_at: "2026-10-25T03:20:29+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-101520", "first_seen_at": "2026-10-23T21:57:22+00:00"}]
---

# Oracle OUI Framework: unauthenticated HTTP request can crash installer service

The Oracle Global Lifecycle Management NextGen OUI Framework installer, part of Oracle Fusion Middleware, has a flaw reachable over HTTP without credentials. An attacker can hang or repeatedly crash the component, causing denial of service with no confidentiality or integrity loss.

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

## How to check

- unknown

## Fix

- Apply the Oracle Critical Patch Update fix for the NextGen OUI Framework on affected releases 12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0, 14.1.2.1.0 and 15.1.1.0.0
- Restrict network access to the installer endpoint until patched

## Timeline

- 2026-10-23T21:57:22+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-101520

## From the sources

Vulnerability in the Oracle Global Lifecycle Management NextGen OUI Framework product of Oracle Fusion Middleware (component: NextGen Installer).  Supported versions that are affected are 12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0, 14.1.2.1.0 and  15.1.1.0.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle Global Lifecycle Management NextGen OUI Framework.  Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Oracle Global Lifecycle Management NextGen OUI Framework. CVSS 3.1 Base Score 7.5 (Availability impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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_