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Fix open redirect check for more cases (#25143)
If redirect_to parameter has set value starting with `\\example.com` redirect will be created with header `Location: /\\example.com` that will redirect to example.com domain.
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@ -49,9 +49,9 @@ func (ctx *Context) RedirectToFirst(location ...string) {
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continue
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}
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// Unfortunately browsers consider a redirect Location with preceding "//" and "/\" as meaning redirect to "http(s)://REST_OF_PATH"
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// Unfortunately browsers consider a redirect Location with preceding "//", "\\" and "/\" as meaning redirect to "http(s)://REST_OF_PATH"
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// Therefore we should ignore these redirect locations to prevent open redirects
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if len(loc) > 1 && loc[0] == '/' && (loc[1] == '/' || loc[1] == '\\') {
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if len(loc) > 1 && (loc[0] == '/' || loc[0] == '\\') && (loc[1] == '/' || loc[1] == '\\') {
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continue
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}
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