Response header discloses a software version
Your affected header advertises an exact version (the value).
Why it matters
Your affected header advertises an exact version (the value). That turns reconnaissance into a lookup: an attacker can match the version against published vulnerabilities for that release and skip straight to the exploits that might work, instead of probing blindly. It also tells them immediately when you are running something out of date. Removing the version costs nothing functionally.
How ShipReady detects it
Shared tables and rules for the two halves below. Split because this check was a hybrid: nine rules read the headers of a response we already have, which genuinely differ between routes, while missing-https-redirect probes the http:// equivalent of the origin — one fact, and running it per page would issue the same request ten times.
Detection is deterministic. ShipReady reports this only when it observes the condition directly, and prefers to miss a real problem over inventing one. Rule version 1.3.0.
How to fix it
This is the prompt ShipReady puts in your report — written to be pasted straight into Cursor, Claude Code, or whichever assistant built the app.
Your affected response header includes an exact software version, which tells an attacker precisely which published vulnerabilities to try. Remove or blank the header at your web server, framework, or CDN: nginx `server_tokens off;`, Express `app.disable('x-powered-by')`, Next.js `poweredByHeader: false` in next.config, or strip it at your reverse proxy/edge. This does not change how your app behaves.Frequently asked questions
- What does "Response header discloses a software version" mean?
- Your affected header advertises an exact version (the value).
- How serious is it?
- ShipReady rates this low. Worth fixing. Small individually, and they accumulate.
- How do I fix it?
- Paste the fix prompt on this page into Cursor, Claude Code or your AI editor. It is the same prompt ShipReady puts in your report.
- Can I check my own site?
- Yes — ShipReady scans up to ten pages of any public site for free and reports this alongside every other check. The free report lists every issue it finds and shows full evidence and a fix prompt for the critical and high-severity ones; medium and low findings are counted and unlock on Pro.
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