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Mar 21, 2022
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Update upload_file.rst #15778

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2 changes: 1 addition & 1 deletion controller/upload_file.rst
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Expand Up @@ -199,7 +199,7 @@ There are some important things to consider in the code of the above controller:
#. A well-known security best practice is to never trust the input provided by
users. This also applies to the files uploaded by your visitors. The ``UploadedFile``
class provides methods to get the original file extension
(:method:`Symfony\\Component\\HttpFoundation\\File\\UploadedFile::getExtension`),
(:method:`Symfony\\Component\\HttpFoundation\\File\\UploadedFile::getClientOriginalExtension`),
the original file size (:method:`Symfony\\Component\\HttpFoundation\\File\\UploadedFile::getSize`)
and the original file name (:method:`Symfony\\Component\\HttpFoundation\\File\\UploadedFile::getClientOriginalName`).
However, they are considered *not safe* because a malicious user could tamper
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