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JD Edwards EnterpriseOne EUVDEUVD-2026-106638

| CVE-2026-91384 MEDIUM
Information Exposure (CWE-200)
2026-10-20 secalert_us@oracle.com GHSA-wfv3-9x6j-ggw9
6.5
CVSS 3.1 · Vendor: oracle
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Authenticate with low-privilege JDE account
  2. Exploit
    Send crafted request over JDENET
  3. Execution
    Exploit Web Runtime SEC flaw
  4. Impact
    Read unauthorized critical ERP data

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V14 - Data Protection Data exposure prevention
MITRE ATT&CK

2 techniques across 2 tactics: Collection, Discovery

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Exploitation Conditions

Exploitation requires an authenticated low-privilege JD Edwards EnterpriseOne Tools account (CVSS PR:L) and network reachability to the JDENET communication service that fronts the Web Runtime SEC component; only versions 9.2.0.0 through 9.2.26.5 are affected. No user interaction is needed (UI:N) and attack complexity is low (AC:L), so once valid low-privilege credentials and JDENET access exist, exploitation is straightforward. The limiting factors defenders should weigh are the mandatory prior authentication and the exposure of the JDENET port - deployments that restrict JDENET to trusted internal networks and tightly control ERP account provisioning substantially reduce realistic risk.

Impact

This is a moderate-priority confidentiality vulnerability, not an emergency. The CVSS 3.1 vector (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N, base 6.5) indicates network-reachable, low-complexity exploitation, but PR:L means the attacker must already hold a valid low-privilege JD Edwards EnterpriseOne account - this is the single largest mitigating factor and keeps the score at Medium rather than Critical. Impact is confined to confidentiality (C:H), with no integrity or availability effect, so the worst case is disclosure of sensitive ERP data rather than data tampering or outage. No EPSS score is provided in the input, there is no CISA KEV listing, and no public exploit code is referenced, so there is no public exploit identified at time of analysis. SSVC-style framing: exploitation status is none/unobserved, technical impact is partial (confidentiality-only), and automatability is uncertain because authentication is required. Signals are internally consistent - the 'network vector but authenticated' profile matches Oracle's standard JDENET-exposed ERP flaw pattern - but note one metadata conflict: the input Tag labels this 'Authentication Bypass' while the CVSS vector explicitly requires privileges (PR:L), so the tag appears inaccurate and should not be used to justify unauthenticated-exploitation assumptions. Treat this as a scheduled Oracle CPU patch item prioritized for internet-exposed or multi-tenant JD Edwards deployments, not a drop-everything event.

Exploit ScenarioDerived

An attacker who has obtained or been granted a low-privilege JD Edwards EnterpriseOne user account sends a crafted request over the network via the JDENET communication service to the Web Runtime SEC component. Because attack complexity is low, the request reliably abuses the flaw to read critical business data the account should not be able to access, up to complete access to all JD Edwards EnterpriseOne Tools data. No public proof-of-concept is referenced in the available data.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
No patch listed yet 0.3% exploitation probability (EPSS)

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AnalysisAIv1 – Oct 21, 2026

Oracle JD Edwards EnterpriseOne Tools builds 9.2.0.0 through 9.2.26.5 expose a confidentiality weakness in the Web Runtime SEC component reachable over the JDENET protocol, letting an authenticated low-privileged attacker read data well beyond their intended authorisation scope - up to all EnterpriseOne Tools-accessible data. Rated CVSS 3.1 6.5 (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N), the bug is easy to trigger once valid credentials and network access to JDENET exist, and no user interaction is required. Exploitation status: no public exploit identified at time of analysis, no CISA KEV listing, and no EPSS score was supplied in the available intelligence; the realistic risk is concentrated in deployments that expose JDENET broadly and permit loosely governed low-privilege ERP accounts.

RemediationAI

Obtain and apply the Oracle Critical Patch Update referenced at https://www.oracle.com/security-alerts/cpuoct2026.html, which is the vendor remediation vehicle for this defect; the supplied data does not state a minimum patched build number beyond the affected ceiling of 9.2.26.5, so confirm the exact fixed Tools release in the CPU advisory or My Oracle Support before closing out change records. Where patching must be staged, cut the exposure first by restricting the JDENET listener to trusted application and logic-server hosts with host-based firewalls or network ACLs - the trade-off is that mis-scoped rules break web-to-logic-server and batch-server communication, so stage rules against a non-production path. In parallel, review and prune low-privilege EnterpriseOne accounts and their role assignments, since the vector requires PR:L, and audit JDENET sessions for reads of objects outside a user's role as a compensating detective control; this does not remove the flaw and adds operational overhead. Certificate or credential rotation after patching is only necessary if compromise is suspected from those audit findings.

Affected VersionsENISA

JD Edwards EnterpriseOne Tools 9.2.0.0 ≤9.2.26.5

Affected Packages

euvd jd_edwards_enterpriseone_tools no fix

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

JDENET is Oracle's proprietary messaging layer inside JD Edwards EnterpriseOne, carrying traffic between web clients, logic servers, enterprise servers, and transaction servers; the Web Runtime SEC component sits on that path and enforces the security model for web-served applications. The flaw is an authorisation/access-control failure within that component - Oracle's feed tags it as an authentication bypass, but the official vector (PR:L) makes clear that a session is required, so the practical defect is that a low-privilege identity can obtain data the security kernel should have filtered per role and object-level permissions. Because the vector is C:H with I:N/A:N, the impact is strictly read-side disclosure rather than tampering or denial of service, consistent with missing or incorrectly applied row/column and object-level checks in the JDENET-exposed runtime. No CWE was assigned in the supplied data, and EUVD (EUVD-2026-106638) mirrors the same 9.2.0.0-9.2.26.5 version range.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (oracle) PRIMARY 6.5 MEDIUM
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
vuln.today AI 6.5 MEDIUM

Network-facing JDENET service (AV:N) with low complexity (AC:L); a valid low-privilege account is required (PR:L), no user interaction, and impact is confidentiality-only (C:H, I:N, A:N).

3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (oracle).

CVSS VectorVendor: oracle

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

DescriptionCVE.org

Vulnerability in the JD Edwards EnterpriseOne Tools product of Oracle JD Edwards (component: Web Runtime SEC). Supported versions that are affected are 9.2.0.0-9.2.26.5. Easily exploitable vulnerability allows low privileged attacker with network access via JDENET 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 6.5 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N).

Threat Intelligence Overview

EPSS Score
0.3%
Top 82% exploitable
Prevalence
Medium
major enterprise ERP suite, common in large orgs but not everywhere
Data Quality
4 sources
Confidence: Medium

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity MEDIUM
CISA KEV No
Public POC No
EPSS 0.3%
Patch available No
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation· derived
None
System Exposure· derived
Open
Automatable· derived
No
Human Impact· derived
Medium

Priority Score

32
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +32
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.

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