Security risk using {!! !!} in blade templates

this is a security risk in laravel


<div class="form-group"> <label for=""><b>Content</b>:</label> <textarea name="content" id="content" cols="30" rows="10" class="ckeditor form-control" placeholder="Enter post content here...">{!! $post->content !!}</textarea> <span class="text-danger error-text content_error"></span> </div>



The security risk in your Laravel Blade template is the use of {!! $post->content !!}, which outputs raw HTML without escaping, making your application vulnerable to Cross-Site Scripting (XSS) attacks.

Safer Approach

You should use {{ }} (double curly braces) instead, which escapes the content by default:

<textarea name="content" id="content" cols="30" rows="10" class="ckeditor form-control" placeholder="Enter post content here...">{{ $post->content }}</textarea>

However, if you must allow HTML (e.g., for a WYSIWYG editor like CKEditor), then you should:

  1. Sanitize Input Before Storing It – Use Laravel’s strip_tags() or a package like HTMLPurifier to allow only safe HTML tags.
  2. Sanitize Output – Use {!! Purifier::clean($post->content) !!} if you're using HTMLPurifier.

Example using Laravel HTML Purifier

First, install it:

composer require mewebstudio/purifier

Then, modify your Blade template:

{!! Purifier::clean($post->content) !!}

This ensures that only safe HTML is rendered, reducing the risk of XSS attacks.

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