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Table of Contents
What does roave/security-advisories:dev-master actually do?
Should you really use dev-master?
How to test if it's working
Tips for real-world usage
Home Development Tools composer How do I use composer require --dev roave/security-advisories:dev-master?

How do I use composer require --dev roave/security-advisories:dev-master?

Jul 10, 2025 am 11:18 AM
composer

You should use composer require --dev roave/security-advisories:dev-master to check for known security vulnerabilities during development. 1. This package blocks installation of dependencies with known security issues by checking against a list of vulnerable versions. 2. It only works during development or CI builds, not at runtime. 3. Using dev-master tracks the latest advisories but may introduce instability due to lack of testing and inconsistent behavior across environments. 4. Prefer stable versions like ^2024.0.0 unless you need real-time advisory updates. 5. After installing with Composer, test it by attempting to install a known vulnerable package like symfony/symfony:v4.4.0-BETA1, which should be blocked. 6. Use this tool in development and CI, avoid in production, combine with other tools like Dependabot, and maintain regular dependency updates for comprehensive security.

You’d use composer require --dev roave/security-advisories:dev-master if you want to check your project for known security vulnerabilities during development. This package doesn’t add any runtime functionality — its sole purpose is to block the installation of packages with known security issues.

Here’s how and why you'd do it.


What does roave/security-advisories:dev-master actually do?

This package works by checking your installed dependencies against a list of known vulnerable versions. It doesn't contain any PHP code that runs in your app — instead, it uses Composer's platform checks to prevent installing problematic packages.

  • If your vendor/ directory includes a package with a known vulnerability, Composer will throw an error when you try to install or update.
  • It's not a runtime tool, so it only matters during development or CI builds.
  • The dev-master version means you're tracking the latest updates from the repository, which can be useful for catching new advisories quickly.

Should you really use dev-master?

Using dev-master means you're pulling the most recent changes from the Git repository, not a stable release. That can be risky in some environments because:

  • There might be breaking changes or bugs not yet tested.
  • You could end up with inconsistent behavior across different developer machines or CI builds.

In most cases, you’re better off using a tagged version, like ^2024.0.0, unless you specifically need bleeding-edge advisory data.

If you still want to go with dev-master, here’s how to do it:

composer require --dev roave/security-advisories:dev-master

Composer will fetch the package and add it under require-dev in your composer.json.


How to test if it's working

Once installed, you can simulate a problem by trying to install a known vulnerable package.

For example, try installing a vulnerable version of Symfony:

composer require symfony/symfony:v4.4.0-BETA1

If the security advisories package is working correctly, Composer should stop the install and show a warning about a known vulnerability.

This helps catch issues early — especially useful in continuous integration pipelines.


Tips for real-world usage

  • Use this in development and CI, but don’t deploy it to production — it’s unnecessary overhead.
  • Prefer stable versions unless you have a reason to track the latest advisories.
  • Keep your dependencies updated regularly; this tool only blocks known bad versions, not outdated ones.
  • Combine it with tools like Symfony Security Checker or Dependabot for more comprehensive coverage.

That’s basically it — nothing too fancy, but very useful for catching red flags early.

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