---
id: "CVE-2026-91309"
kind: "vulnerability"
aliases: ["CVE-2026-91309"]
title: "Oracle JD Edwards EnterpriseOne Tools: flaw lets unauthenticated network attackers reach data"
severity: "medium"
cvss: 5.9
epss: 0.00318
exploited: false
status: "open"
category: "other"
products: []
ecosystems: []
tags: ["enterpriseone", "erp", "jd-edwards", "oracle", "other"]
not_affected_if: ["not-jde-enterpriseone", "outside-9.2.0.0-9.2.26.5"]
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-2026-91309", "first_seen_at": "2026-10-23T21:57:26+00:00"}, {"source": "epss", "url": "https://api.first.org/data/v1/epss?cve=CVE-2026-91309", "first_seen_at": "2026-10-25T12:38:52+00:00"}]
---

# Oracle JD Edwards EnterpriseOne Tools: flaw lets unauthenticated network attackers reach data

Oracle JD Edwards EnterpriseOne Tools versions 9.2.0.0 through 9.2.26.5 contain a flaw in the Interoperability Security component. A difficult-to-exploit attack over HTTPS, requiring no login, can grant access to critical data accessible to the product.

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

## How to check

- Check the installed EnterpriseOne Tools release against the affected range `9.2.0.0` to `9.2.26.5`
- Review the Oracle Security Alert or Critical Patch Update notice for the patch level applicable to your release (unknown from sources)

## Fix

- Apply the Oracle Critical Patch Update fix for JD Edwards EnterpriseOne Tools (patched version unknown from sources)
- Restrict HTTPS access to the EnterpriseOne Tools interoperability endpoints to trusted networks until patched

## Timeline

- 2026-10-23T21:57:26+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-91309
- 2026-10-25T12:38:52+00:00 epss https://api.first.org/data/v1/epss?cve=CVE-2026-91309

## From the sources

Vulnerability in the JD Edwards EnterpriseOne Tools product of Oracle JD Edwards (component: Interoperability SEC).  Supported versions that are affected are 9.2.0.0-9.2.26.5. Difficult to exploit vulnerability allows unauthenticated attacker with network access via HTTPS to compromise JD Edwards EnterpriseOne Tools.  Successful attacks of this vulnerability can result in  unauthorized access to critical data or complete access to all JD Edwards EnterpriseOne Tools accessible data. CVSS 3.1 Base Score 5.9 (Confidentiality impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/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_