---
id: CVE-2026-123307
title: >-
  In JetBrains IntelliJ IDEA before 2026.3, 

  2026.2.4 unauthenticated connection to an arbitrary host via run
  configurations was possible
summary: >-
  In JetBrains IntelliJ IDEA before 2026.3, 

  2026.2.4 unauthenticated connection to an arbitrary host via run
  configurations was possible
severity: medium
cvss: 6.8
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N'
cvssSource: cna
cwe:
  - CWE-918
vendor: JetBrains
product: IntelliJ IDEA
affected:
  - |-
    intellij_idea < 2026.3, 
    2026.2.4
published: '2026-11-06'
updated: '2026-11-06'
sourceUpdated: '2026-11-06T10:28:00.312Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-123307'
references:
  - url: 'https://www.jetbrains.com/privacy-security/issues-fixed/'
tags:
  - cve.org
ingestedAt: '2026-11-06T10:49:35.362Z'
---

## Overview

In JetBrains IntelliJ IDEA before 2026.3, 
2026.2.4 unauthenticated connection to an arbitrary host via run configurations was possible

## Affected

- `intellij_idea < 2026.3, 
2026.2.4`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.