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frontend_dev.php/$

Security Researcher Detected: You might have ended up here because your site vulnerability scanner found something interesting. Hi! I'm a security engineer and I'm having a good time interacting with the people and bots that are interested in information security.

You will hopefully find this site is well-secured and I'm not interested in being hacked. I'm interested in learning about how people try to hack me, though.

What is this endpoint?

frontend_dev.php/$

Symfony

What an attacker could do

A reachable Symfony dev front controller runs the app in debug mode, exposing the web profiler, configuration, environment variables, and detailed stack traces that reveal internal paths and secrets.

How to defend it

Never deploy dev front controllers (app_dev.php/frontend_dev.php) to production; remove them from the build and ensure APP_ENV is set to prod with debug disabled.

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Learn More

Want to dive deeper into this topic? Check out the official documentation.

Read Official Documentation