---
id: "CVE-2026-91350"
kind: "vulnerability"
aliases: ["CVE-2026-91350"]
title: "Oracle Outside In Clean Content SDK: unauthenticated network crash causes denial of service"
severity: "high"
cvss: 7.5
epss: 0.00441
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["document-processing", "fusion-middleware", "oracle", "outside-in", "package"]
not_affected_if: ["sdk-not-installed"]
published_at: "2026-10-20T22:20:37+00:00"
first_seen_at: "2026-10-23T21:57:26+00:00"
updated_at: "2026-10-25T12:38:52+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-91350", "first_seen_at": "2026-10-23T21:57:26+00:00"}, {"source": "epss", "url": "https://api.first.org/data/v1/epss?cve=CVE-2026-91350", "first_seen_at": "2026-10-25T12:38:52+00:00"}]
---

# Oracle Outside In Clean Content SDK: unauthenticated network crash causes denial of service

Oracle Outside In Clean Content SDK 8.5.8 can be made to hang or repeatedly crash by an unauthenticated remote attacker sending crafted HTTP requests. The impact is availability only, with no confidentiality or integrity loss stated in the sources.

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

## How to check

- Check whether the Oracle Outside In Clean Content SDK is present and at version `8.5.8` in the application's dependencies or installation
- Confirm whether the SDK is reachable from HTTP input paths in your services
- unknown for other checks the sources do not give

## Fix

- Move off Oracle Outside In Clean Content SDK `8.5.8` to the patched version named in Oracle's Critical Patch Update advisory
- unknown for the exact fixed version, as the sources do not say

## Timeline

- 2026-10-23T21:57:26+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-91350
- 2026-10-25T12:38:52+00:00 epss https://api.first.org/data/v1/epss?cve=CVE-2026-91350

## From the sources

Vulnerability in the Oracle Outside In Technology product of Oracle Fusion Middleware (component: Outside In Clean Content SDK).   The supported version that is affected is 8.5.8. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle Outside In Technology.  Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Oracle Outside In Technology. 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_