Detections
Analytics

JetBrains CLion < 2026.1.4 Code Execution (CVE-2026-123831)

critical Nessus Plugin ID 380177

Synopsis

The integrated development environment installed on the remote host is affected by a code execution vulnerability.

Description

The version of JetBrains CLion installed on the remote host is prior to 2026.1.4. It is, therefore, affected by a vulnerability:

 - In JetBrains CLion before 2026.2, 2026.1.4 code execution was possible in Safe Mode via Meson project settings.
 (CVE-2026-123831)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Upgrade to JetBrains CLion version 2026.1.4, 2026.2 or later.

See Also

https://www.jetbrains.com/privacy-security/issues-fixed/

Plugin Details

Severity: Critical

ID: 380177

File Name: jetbrains_clion_CVE-2026-123831.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Misc.

Published: 11/13/2026

Updated: 11/13/2026

Configuration: Enable thorough checks (optional)

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5

Percentile: 92.82

CVSS v2

Risk Factor: Critical

Base Score: 10

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2026-123831

CVSS v3

Risk Factor: Critical

Base Score: 9.6

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

Vulnerability Information

CPE: cpe:/a:jetbrains:clion

Required KB Items: installed_sw/JetBrains CLion

Patch Publication Date: 7/2/2026

Vulnerability Publication Date: 11/6/2026

Reference Information

CVE: CVE-2026-123831

CWE: 829