[10.x] Update validation.md with extensions validator #9151
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antimech
reviewed
Nov 28, 2023
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| > **Warning** | ||
| > For security reasons, you should never only validate a file type by its extension. Since `extensions` does not validate that the file type matches its extension, this rule should always be used in combination with the [MIME Types](#rule-mimetypes) or [MIME Type By File Extension](#rule-mimes) validations. | ||
| > You should never rely on validating a file by its user-assigned extension alone. This rule should typically always be used in combinatino with the [`mimes`](#rule-mimes) or [`mimetypes`](#rule-mimetypes) rules. |
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Related laravel/framework#49082