JetBrains CLion vulnerabilities

4 known CVE vulnerabilities in JetBrains CLion, translated and rated.

CVE-2026-123277Medium
In JetBrains CLion before 2026.3 and 2026.2.4.1, missing authentication allowed local users to obtain the debug session environment on Linux.
CVE-2026-123276High
In JetBrains CLion before 2026.3 and 2026.2.4.1, code execution was possible in Safe Mode via a crafted GDB server debug profile.
CVE-2026-123832Critical
In JetBrains CLion before 2026.2, code execution was possible in Safe Mode via a JSON compilation database. The flaw allows arbitrary code to run despite Safe Mode being enabled.
CVE-2026-123831Critical
In JetBrains CLion before 2026.2 and 2026.1.4, code execution was possible in Safe Mode via Meson project settings. The flaw bypasses Safe Mode protections.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS