How to fix info disclosure server on Webflow

Steps for Webflow

1. Webflow hosting is managed by Webflow — the `Server` header is not configurable from the Webflow Designer or Project Settings.
2. For sites on Webflow's own hosting (*.webflow.io or custom domain via Webflow DNS), contact Webflow Support to report the finding.
3. The recommended merchant-accessible fix is to use *Cloudflare as a proxy*: in Webflow Project Settings > Hosting, note your site's IP/CNAME, then configure your domain in Cloudflare with the proxy enabled. Add a Cloudflare *Transform Rule* (Rules > Transform Rules > Modify Response Header) to remove the `Server` header.
4. Verify by running `curl -I https://yourdomain.com` — the `Server` header should disappear or show `cloudflare`.

What is info disclosure server?

Every time a visitor's browser (or a hacker's scanner) requests a page from your store, your web server sends back a collection of HTTP headers alongside the page content. One of these is the `Server` header — for example, `Server: nginx/1.25.5` or `Server: Apache/2.4.58 (Ubuntu)`. This header broadcasts exactly which server software you are running and, critically, which version. It is visible to anyone using a browser's developer tools, a command-line tool like `curl`, or an automated vulnerability scanner. Hiding or removing it takes only a small configuration change and immediately stops your server from volunteering this information.

Attackers routinely scan millions of websites, harvest version numbers from `Server` headers, and then look up known CVEs (publicly disclosed vulnerabilities) for that exact software version. If your server announces `nginx/1.25.5`, a malicious actor instantly knows which published exploits to try — no guesswork required. Removing the header does not make your server invulnerable, but it eliminates the easiest first step in a targeted attack, increasing the cost and effort for an adversary. This is classified under OWASP A05:2021 Security Misconfiguration — one of the most common causes of real-world breaches. Beyond security, some enterprise procurement and compliance processes (PCI-DSS, ISO 27001) explicitly flag verbose server banners as a finding that must be remediated before certification.

See the complete Info disclosure server guide for every platform and the full background.