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The dangers of single line regular expressions
The Neonify challenge on Hack The Box is a small Sinatra(a Ruby web framework) app, that generates a glowing text of the submitted value:
The Neonify challenge on Hack The Box is a small Sinatra(a Ruby web framework) app, that generates a glowing text of the submitted value: If we can bypass the regular expression check, we can execute any ruby code in ERB. Besides that, try to avoid using user controller values at places where code can be executed.
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