---
id: "CVE-2026-91305"
kind: "vulnerability"
aliases: ["CVE-2026-91305"]
title: "Oracle JD Edwards EnterpriseOne Tools: unauthenticated network attacker reads and changes data"
severity: "critical"
cvss: 9.1
epss: 0.00377
exploited: false
status: "open"
category: "vendor"
products: [{"name": "JD Edwards EnterpriseOne Tools", "fixed": [], "affected": ">= 9.2.0.0, <= 9.2.26.5", "ecosystem": "vendor"}]
ecosystems: ["vendor"]
tags: ["enterpriseone", "jd-edwards", "network-exposed", "oracle", "self-hosted", "vendor"]
not_affected_if: ["default-config", "oracle-cloud-managed"]
published_at: "2026-10-20T22:20:32+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-2026-91305", "first_seen_at": "2026-10-23T21:57:26+00:00"}, {"source": "analyst", "url": null, "first_seen_at": "2026-10-23T22:58:26+00:00"}, {"source": "epss", "url": "https://api.first.org/data/v1/epss?cve=CVE-2026-91305", "first_seen_at": "2026-10-25T12:38:52+00:00"}]
---

# Oracle JD Edwards EnterpriseOne Tools: unauthenticated network attacker reads and changes data

Oracle JD Edwards EnterpriseOne Tools 9.2.0.0 through 9.2.26.5 has an unauthenticated flaw in the Installation Security component, reachable over HTTPS. CVSS 9.1: an attacker can read and modify all data Tools can access. Fixed in Oracle's October 2026 Critical Patch Update.

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

## Affected

- vendor:JD Edwards EnterpriseOne Tools affected >= 9.2.0.0, <= 9.2.26.5 fixed ?

## How to check

Check the installed EnterpriseOne Tools release (Server Manager or the Tools release shown on the deployment server). Any release from 9.2.0.0 to 9.2.26.5 is affected. Also check whether the JDE HTTPS ports are reachable from untrusted networks.

## Fix

Apply the JD Edwards patch listed in the Patch Availability Document of the Oct 2026 CPU (My Oracle Support login needed). Armis says 9.2.26.6 or later, but Oracle's public page does not state the fixed build; confirm in MOS. Until patched, restrict network access to the Tools HTTPS ports.

## Timeline

- 2026-10-23T21:57:26+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-91305
- 2026-10-23T22:58:26+00:00 analyst — Oracle CPU Oct 2026 lists EnterpriseOne Tools 9.2.0.0-9.2.26.5 as affected; the patch doc is behind My Oracle Support (login), so the fixed build is not confirmed from Oracle. Armis infers 9.2.26.6+ (not primary). No exploitation or PoC found; no social search done. Installation-security hardening steps not found.
- 2026-10-25T12:38:52+00:00 epss https://api.first.org/data/v1/epss?cve=CVE-2026-91305

## Documents

- [advisory] Oracle Critical Patch Update Advisory - October 2026 https://www.oracle.com/security-alerts/cpuoct2026.html
- [mentions] Armis: CVE-2026-91305 https://cve.armis.com/CVE-2026-91305

## From the sources

Vulnerability in the JD Edwards EnterpriseOne Tools product of Oracle JD Edwards (component: Installation Security).  Supported versions that are affected are 9.2.0.0-9.2.26.5. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTPS to compromise JD Edwards EnterpriseOne Tools.  Successful attacks of this vulnerability can result in  unauthorized creation, deletion or modification access to critical data or all JD Edwards EnterpriseOne Tools accessible data as well as  unauthorized access to critical data or complete access to all JD Edwards EnterpriseOne Tools accessible data. CVSS 3.1 Base Score 9.1 (Confidentiality and Integrity impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N).

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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_