---
id: "CVE-2026-91320"
kind: "vulnerability"
aliases: ["CVE-2026-91320"]
title: "Oracle JDeveloper: privileged local user can modify data or crash IDE"
severity: "medium"
cvss: 5.7
epss: 0.0012
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["java", "oracle-fusion-middleware", "oracle-jdeveloper", "package"]
not_affected_if: ["no-shared-logon", "other-jdeveloper-versions"]
published_at: "2026-10-20T22:20:33+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-2026-91320", "first_seen_at": "2026-10-23T21:57:26+00:00"}, {"source": "epss", "url": "https://api.first.org/data/v1/epss?cve=CVE-2026-91320", "first_seen_at": "2026-10-25T12:38:52+00:00"}]
---

# Oracle JDeveloper: privileged local user can modify data or crash IDE

Oracle JDeveloper 12.2.1.4.0 and 14.1.2.0.0 contain a flaw that lets a highly privileged local user with logon to the host change data or cause a repeatable crash. The advisory rates it CVSS 5.7 (medium), with integrity and availability impact only.

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

## How to check

- Check the installed JDeveloper version in Help > About or the install directory name, and compare against `12.2.1.4.0` and `14.1.2.0.0`
- unknown

## Fix

- Move JDeveloper to a release newer than `12.2.1.4.0` or `14.1.2.0.0` once Oracle publishes the patched build; the sources do not name the fixed version
- unknown

## Timeline

- 2026-10-23T21:57:26+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-91320
- 2026-10-25T12:38:52+00:00 epss https://api.first.org/data/v1/epss?cve=CVE-2026-91320

## From the sources

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).

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