Tech Stack Fingerprint Check

Q: Is it bad that VitalSite can detect my CMS?

Detection itself is unavoidable and not a vulnerability. The risk is leaking exact version numbers in headers, which tells attackers which known exploits to try.

Q: Does hiding my server version make me secure?

It removes a shortcut for automated attacks but is not a substitute for patching. Use it together with keeping software up to date.

VitalSite detects your CMS, server, and frameworks — and flags version numbers leaking in headers that help attackers target known exploits.

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Before attacking a site, adversaries fingerprint it — they identify the CMS, server, and frameworks so they can look up known exploits for those exact versions. VitalSite performs the same fingerprinting, both to power stack-aware fix guides and to flag where your software is advertising more than it should.

What VitalSite detects

CMS: WordPress, Drupal, Joomla, Shopify, and Wix from HTML patterns.
Server: Apache, Nginx, or IIS from the Server header.
Frameworks: React, Vue, Angular, and Next.js from HTML and headers.
Generator and version strings where they are visible.

This detection is what makes VitalSite stack-aware: a WordPress site gets wp-config instructions, an Nginx server gets nginx.conf blocks, and a Cloudflare user gets dashboard steps.

Why it matters

Knowing your stack isn't a vulnerability by itself — but leaking exact version numbers is. A header like Server: Apache/2.4.29 or X-Powered-By: PHP/7.2.1 tells an attacker precisely which CVEs to try (see our CVE matching check). Hiding versions doesn't fix the underlying software, but it removes a free shortcut and slows automated attacks.

How to fix it

Suppress version banners. On Apache, set ServerTokens Prod and ServerSignature Off. On Nginx, set server_tokens off;.

Remove X-Powered-By. In PHP, set expose_php = Off. In Express, call app.disable('x-powered-by'). In WordPress, remove the generator meta tag.

server_tokens off;   # nginx

Keep the software patched. Hiding the version buys time, but the real fix is staying current — which the CVE matching check helps you prioritize. For WordPress specifically, follow the hardening checklist.

Verify the fix

Re-scan the domain. The Tech Stack Fingerprint check should still identify your stack (useful for tailored fixes) but should no longer flag version disclosure in the Server or X-Powered-By headers.

Run a free full-domain scan to see whether this affects your site — every page, with an exact fix guide. Pro and Agency plans add PDF export and monitoring.

See if this affects your site

Run a free full-domain scan — this check runs on every page, with an exact fix guide.

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Frequently asked questions

Is it bad that VitalSite can detect my CMS?

Does hiding my server version make me secure?

CVE Matching

Match detected versions to known CVEs.

Error Page Leakage

Another common version-leak source.