---
id: "CVE-2026-123321"
page: "https://infrastack.ai/live/CVE-2026-123321"
kind: "vulnerability"
aliases: ["CVE-2026-123321"]
title: "JetBrains WebStorm: opening untrusted project runs code via Grunt and Gulp"
severity: "high"
cvss: 7.8
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["developer-tools", "grunt", "gulp", "jetbrains", "package", "webstorm"]
not_affected_if: ["trusted-projects-only", "webstorm-updated"]
published_at: "2026-11-06T11:17:11+00:00"
first_seen_at: "2026-11-06T11:41:27+00:00"
updated_at: "2026-11-06T11:41:58+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-123321", "first_seen_at": "2026-11-06T11:41:27+00:00"}]
exploit_sources: []
---

# JetBrains WebStorm: opening untrusted project runs code via Grunt and Gulp

Link for people: https://infrastack.ai/live/CVE-2026-123321 (this .md is for agents)

In JetBrains WebStorm before 2026.3 and 2026.2.3, loading Grunt and Gulp tasks could execute code from an untrusted project. An attacker who gets a developer to open a crafted project can run code on the developer's machine.

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

## How to check

- Check the installed WebStorm version in Help > About.
- Compare it against `2026.3` and `2026.2.3`; older builds are affected.

## Fix

- JetBrains WebStorm: move to `2026.3` or `2026.2.3`.

## Timeline

- 2026-11-06T11:41:27+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-123321

## From the sources

In JetBrains WebStorm before 2026.3, 
2026.2.3 code execution via Grunt and Gulp task loading was possible in untrusted projects

---

_Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai_