CVE-2026-91320

Analyzed Analyzed - Analysis Complete

Denial of Service in Oracle JDeveloper

Publication date: 2026-10-20

Last updated on: 2026-11-10

Assigner: Oracle

Description

Vulnerability in the Oracle JDeveloper product of Oracle Fusion Middleware (component: Oracle JDeveloper). Supported versions that are affected are 12.2.1.4.0 and 14.1.2.0.0. Difficult to exploit vulnerability allows high privileged attacker with logon to the infrastructure where Oracle JDeveloper executes to compromise Oracle JDeveloper. Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Oracle JDeveloper accessible data and unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Oracle JDeveloper. CVSS 3.1 Base Score 5.7 (Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:H).

CVSS Scores

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Meta Information

Published

2026-10-20

Last Modified

2026-11-10

Generated

2026-11-10

AI Q&A

2026-10-21

EPSS Evaluated

2026-11-09

NVD

CVE-2026-91320

EUVD

EUVD-2026-106574

Affected Vendors & Products

Vendor	Product	Version / Range
oracle	jdeveloper	12.2.1.4.0
oracle	jdeveloper	14.1.2.0.0

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-284	The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

Attack-Flow Graph

Executive Summary

This is a vulnerability in Oracle JDeveloper, a tool for Java development. It affects versions 12.2.1.4.0 and 14.1.2.0.0. The issue allows a highly privileged attacker with local access to compromise the software. Successful exploitation could lead to unauthorized data modification, deletion, or creation, as well as causing the application to crash repeatedly or hang.

Detection Guidance

Detection requires checking for Oracle JDeveloper versions 12.2.1.4.0 or 14.1.2.0.0. Inspect installed software versions and logs for suspicious activity related to data access or crashes.

Impact Analysis

If you use Oracle JDeveloper in your environment, an attacker with local access and high privileges could exploit this flaw to alter or delete critical data, create unauthorized data, or disrupt the application by causing crashes or hangs. This could lead to data loss, corruption, or downtime for development activities.

Compliance Impact

This vulnerability could impact compliance by allowing unauthorized data modification or deletion, which violates integrity and availability requirements in standards like GDPR and HIPAA. Unauthorized access or data corruption may lead to non-compliance with data protection and security policies.

Mitigation Strategies

Apply Oracle-provided patches or updates for affected JDeveloper versions. Restrict user privileges to reduce attack surface. Monitor for unauthorized data changes or system crashes.

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