---
id: CVE-2026-123831
title: |-
  In JetBrains CLion before 2026.2, 
  2026.1.4 code execution was possible in Safe Mode via Meson project settings
summary: |-
  In JetBrains CLion before 2026.2, 
  2026.1.4 code execution was possible in Safe Mode via Meson project settings
severity: critical
cvss: 9.6
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H'
cvssSource: cna
cwe:
  - CWE-829
vendor: JetBrains
product: CLion
affected:
  - |-
    CLion < 2026.2, 
    2026.1.4
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-11-06T16:37:35.394638Z'
published: '2026-11-06'
updated: '2026-11-06'
sourceUpdated: '2026-11-06T16:49:54.420Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-123831'
references:
  - url: 'https://www.jetbrains.com/privacy-security/issues-fixed/'
tags:
  - cve.org
ingestedAt: '2026-11-06T16:57:43.368Z'
---

## Overview

In JetBrains CLion before 2026.2, 
2026.1.4 code execution was possible in Safe Mode via Meson project settings

## Affected

- `CLion < 2026.2, 
2026.1.4`

## Remediation

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