What are the potential pitfalls of using header("Location: $urlDankeSeite") for redirection in PHP?

Using header("Location: $urlDankeSeite") for redirection in PHP can potentially lead to header injection vulnerabilities if the $urlDankeSeite variable is not properly sanitized. To mitigate this risk, it is recommended to use the header() function with a hardcoded URL instead of a variable. 

// Hardcoded URL redirection
header("Location: https://example.com/thank-you-page");
exit;

Keywords

header function redirection URL security vulnerability HTTP headers

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