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Finding

A response header names a software version

Naming the exact version tells anyone scanning the internet which known issues to try first against your host.

Last updated September 20, 2026

This week · About ten minutes

Why AI-built apps get this

Builders leave traces: a header, a build artefact, a familiar path, a meta tag nobody removed. On its own a fingerprint is harmless. It becomes useful to someone else when a class of issue is reported against a particular builder and they want a list of apps to try it on.

What it affects

Naming the exact version tells anyone scanning the internet which known issues to try first against your host.

What the evidence line looks like

x-powered-by: Express, build artefact names the framework

Every finding on a result carries a line like this one: the request that was made and the answer that came back. You can run the same request yourself and get the same answer, which is the point.

The fix

Remove or shorten the Server and X-Powered-By headers in your hosting settings. Observed: {value}.

Prompt for your coding agent

Your responses announce the server software ({value}). Remove or shorten the Server and X-Powered-By headers in your server or hosting settings.

A result gives you this prompt written for your builder, in its own dialect, and a batch prompt that carries every fix at once.

Incidents that involved this

  • Not verified

    First-quarter 2026 assessment of 200 apps

    183 of 200 vibe-coded apps, 91.5 percent, contained at least one vulnerability traceable to AI hallucination or missing security context.

  • Declared

    CVE growth in AI-generated code

    CVE entries attributed to AI-generated code rose from 6 in January 2026 to more than 35 in March 2026.

  • Observed

    5,600 vibe-coded apps scanned

    More than 2,000 vulnerabilities and more than 400 exposed secrets found across vibe-coded apps.

  • Not verified

    Tenzai study of AI-built apps

    69 vulnerabilities across 15 apps built by five AI coding tools.

Related terms

Run the free Launch Risk Check on your app

ShipReady is not a penetration test or a security certification. No automated check can prove an application is secure.

Last updated September 20, 2026