Detect Flask
Flask is a Python micro web framework ideal for rapidly constructing web applications, offering minimalism, flexibility, and modularity.
Detection looks at response headers across 1 fingerprint rules among the site's public responses.
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Websites using Flask
Loading website list…
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Signal classes
PluginView evaluates public page signals in these classes when identifying Flask. Individual fingerprint rule bodies are proprietary and are not published.
- Response headers
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Example public indicators for Flask
Illustrative indicators derived from public catalog metadata for Flask. A live scan may match additional proprietary rules beyond these examples.
- server: Werkzeug/??
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What a detection means
- Establishes
- One or more public signals on the scanned page matched a known Flask signature (1 rules) at the time of the scan.
- Does not establish
- A sitewide install of Flask, an active vendor contract, exclusive use, or that Flask is still in place today.
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How to check a site for Flask
- 1. Enter the website URL in the scan form — homepage, pricing, checkout, or login pages usually expose the strongest Flask signals.
- 2. PluginView reads only public responses (response headers) and scores them against the Flask signature set (1 rules).
- 3. Review the confidence score and text explanation for Flask on the results page.
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Commonly implies
A confirmed Flask match also implies these technologies are present.
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FAQ: detecting Flask
- Can PluginView detect Flask without logging in?
- Yes. PluginView only reads publicly accessible responses when checking for Flask — typically response headers. It does not bypass authentication or paywalls.
- What category is Flask?
- Flask is classified under Web frameworks, Web servers in the PluginView directory.
- How many fingerprint rules cover Flask?
- This reference currently tracks 1 fingerprint rule across response headers. Individual rule bodies are proprietary and are not published.
- What public signals suggest a site uses Flask?
- Illustrative public indicators for Flask include server: Werkzeug/??. A live scan may match additional proprietary rules beyond these examples.
