How to fix server version on PrestaShop

Steps for PrestaShop

1. Add 'expose_php = Off' in 'php.ini' to remove 'X-Powered-By: PHP/x.x'.
2. In Apache, add 'Header unset X-Powered-By', 'ServerTokens Prod', and 'ServerSignature Off' to your VirtualHost or '.htaccess'.
3. In Nginx, add 'server_tokens off;' and 'fastcgi_hide_header X-Powered-By;' to your server block.
4. Optionally install a PrestaShop security module (e.g. 'Security Lite') that can add/remove response headers from the admin back office.
5. Verify via DevTools or 'curl -I' that the headers no longer reveal software versions.

What is server version?

Every time a browser (or a bot) requests a page from your store, your web server sends back a set of "response headers" — invisible metadata about the response. Two of these headers, `Server` and `X-Powered-By`, often broadcast exactly what software is running your site and which version it is (for example, `Server: Vercel` or `X-Powered-By: Next.js`). This is called "server version disclosure" or "technology fingerprinting." While the header itself doesn't break anything, it acts like a name-badge that tells the whole internet: "Here's exactly what I'm running."

Attackers routinely scan millions of websites looking for servers running known vulnerable versions of software. When your headers announce your exact stack, you become a much easier target — automated exploit tools can match your version against public vulnerability databases (CVEs) and launch targeted attacks in seconds, without any human involvement. Suppressing these headers is a recognised security hardening step that reduces your "attack surface" and is increasingly expected by security audits, PCI-DSS assessments, and enterprise buyers reviewing your store. It also prevents competitors or scrapers from trivially identifying and copying your technology stack. Fixing it is usually a quick-win configuration change that has zero impact on site speed or user experience.

See the complete Server version guide for every platform and the full background.