Laravel concurrently and the shell-quote exploit

Level 58

Certainly! Here’s a summary of the issue and a suggested solution for dealing with the concurrently and shell-quote exploit in Laravel projects (involving the fixed dependency issue).

Problem Summary:

Laravel (11.x, 12.x, 13.x) comes with [email protected] by default.
[email protected] uses [email protected] (vulnerable).
[email protected] patches the vulnerability, but [email protected] does not pull it in.
Upgrading to [email protected] fixes the dependency, but requires Node 22+ (which might not be feasible for everyone).

Solution:

1. Use npm/yarn overrides (Recommended for most Laravel projects)

You can override the problematic sub-dependency (shell-quote) to always use 1.8.4, even if concurrently asks for 1.8.3. This forces npm/yarn to resolve to the patched version.

With npm (`package.json`):

Add to your package.json:

"overrides": {
    "shell-quote": "1.8.4"
}

With Yarn (`package.json`):

If using Yarn v2+:

"resolutions": {
    "shell-quote": "1.8.4"
}

Then:

npm install
# or
yarn install

This will ensure [email protected] is used throughout the project, mitigating the exploit.

2. Patch `concurrently` manually (not ideal for long-term)

You could fork or patch concurrently to use [email protected], but this creates maintenance headaches. Use the overrides/resolutions method above instead, unless you have strict audit requirements.

3. Upgrade to `[email protected]` (if using Node.js 22+)

If your environment supports Node 22+, update your package.json:

"concurrently": "^10.0.0"

Then:

npm install

This will pull the patched dependencies, but is only viable if your node version allows.

4. Wait for an official fix

You can also open an issue or PR on concurrently’s repo requesting 9.x branch to depend on "shell-quote": "^1.8.4" and a 9.2.2 release, but this may not happen quickly.

Summary Table:

Solution	Node Version	Maint. Effort	Compatible with Laravel 11/12/13	Security
Package overrides (`overrides`/`resolutions`)	>=12	Low	Yes	Good
Upgrade concurrently to 10.x	22+	Low	Yes	Good
Patch concurrently manually	Any	High	Yes	Good
Wait for new 9.x release	Any	Low	Yes (after release)	Good

Example `package.json` override (`npm`):

{
  "name": "your-laravel-app",
  "dependencies": {
    "concurrently": "^9.0.1"
  },
  "overrides": {
    "shell-quote": "1.8.4"
  }
}

Conclusion:
Use the overrides (npm) or resolutions (Yarn) approach to ensure you have the patched shell-quote version now. Monitor for an official patch in the concurrently 9.x series for a more permanent fix.

References:

Let me know if you need step-by-step command line instructions!

Laravel concurrently and the shell-quote exploit

1. Use npm/yarn overrides (Recommended for most Laravel projects)

With npm (package.json):

With Yarn (package.json):

2. Patch concurrently manually (not ideal for long-term)