Block access to composer.json and package.json

Publicly accessible composer.json and package.json files reveal your exact dependency list — every third-party library and package your site relies on, often including specific version numbers — providing an attacker with a genuine, detailed roadmap of exactly which dependencies to check for known vulnerabilities specific to your site's actual technical stack.

This represents a particularly efficient reconnaissance opportunity for attackers, since rather than needing to guess or probe for what technologies your site uses, this file provides a complete, explicit list with specific versions — dramatically narrowing the research required to identify a specific, exploitable vulnerability in your actual dependency stack.

The genuine risk scales with your dependency count and the currency of your version management — a site with many dependencies, some potentially outdated, exposed through this file provides an attacker with numerous specific, documented vulnerability possibilities to investigate, each representing a real potential attack vector into your specific site.

Blocking public access to these files, while ensuring your actual dependency management and update processes continue functioning normally for legitimate development and deployment purposes, closes off this specific reconnaissance opportunity without affecting your genuine technical operations, since these files are meant for build-time and development use, not public runtime access.