Critical · 9.6 CVE-2026-123831 EUVD-2026-118334GHSA-3hcx-x64h-4m2v

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

Published Nov 6, 2026 · Updated Nov 7, 2026 · Assigned by JetBrains

Vendor: JetBrains Product: CLion

Description

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

Affected products

Vendor	Product	Affected	Fixed
JetBrains	CLion	< 2026.2, 2026.1.4	2026.2, 2026.1.4

Advisories 1

WID-SEC-2026-4400 JetBrains CLion: Mehrere Schwachstellen ermöglichen Codeausführung BSI CERT-Bund (WID) · Nov 8, 2026

References

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