Inclusion of Functionality from Untrusted Control Sphere in IntelliJ IDEA - CVE-2026-123302
Published: November 6, 2026
Vulnerability identifier: #VU159669
CSH Severity: High
CVSS v4: 8.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-123302
CWE-ID: CWE-829
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code.
The vulnerability exists due to inclusion of functionality from an untrusted control sphere in IntelliJ IDEA's script engine discovery mechanism when processing untrusted projects. A remote attacker can supply a specially crafted project to cause execution of untrusted code during script engine discovery.
Affected software
IntelliJ IDEA
How to mitigate CVE-2026-123302
Install security update from vendor's website.
IntelliJ IDEA - addressed in versions 2025.3.6.2, 2026.1.5.1, 2026.2.4, 2026.3