---
id: "CVE-2026-123837"
page: "https://infrastack.ai/live/CVE-2026-123837"
kind: "vulnerability"
aliases: ["CVE-2026-123837"]
title: "JetBrains IntelliJ IDEA: untrusted projects can inject commands via Tomcat run configurations"
severity: "high"
cvss: 7.8
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["intellij-idea", "java", "jetbrains", "package", "tomcat", "wsl"]
not_affected_if: ["no-tomcat-run-configs", "no-wsl", "trusted-projects-only"]
published_at: "2026-11-06T17:17:22+00:00"
first_seen_at: "2026-11-06T17:43:12+00:00"
updated_at: "2026-11-06T17:44:58+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-123837", "first_seen_at": "2026-11-06T17:43:12+00:00"}]
exploit_sources: []
---

# JetBrains IntelliJ IDEA: untrusted projects can inject commands via Tomcat run configurations

Link for people: https://infrastack.ai/live/CVE-2026-123837 (this .md is for agents)

In JetBrains IntelliJ IDEA before 2026.3 (and 2026.2.1), opening an untrusted project with a Tomcat run configuration on WSL allowed command injection. An attacker who supplies a project can get commands executed on the developer's machine.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Open IntelliJ IDEA and check Help > About for the build version, then compare against `2026.3` and `2026.2.1`.
- Check whether you use Tomcat run configurations on WSL with projects from outside your team.

## Fix

- JetBrains IntelliJ IDEA: move to `2026.3` or `2026.2.1`.

## Timeline

- 2026-11-06T17:43:12+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-123837

## From the sources

In JetBrains IntelliJ IDEA before 2026.3, 
2026.2.1 command injection was possible in untrusted projects via Tomcat run configurations on WSL

---

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