What are the potential issues with passing URL parameters in PHP forms?

Passing URL parameters in PHP forms can lead to security vulnerabilities, such as exposing sensitive data in the URL or allowing for manipulation of form values by users. To solve this issue, it is recommended to use the POST method when submitting forms, as it keeps data hidden from the URL and provides a more secure way to transmit information. 

<form method="post" action="process_form.php">
  <input type="text" name="username">
  <input type="password" name="password">
  <input type="submit" value="Submit">
</form>

Keywords

security vulnerabilities SQL injection cross-site scripting data validation URL encoding

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