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Add warning based on wkhtmltopdf recommendations #528

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Add warning based on wkhtmltopdf recommendations #528

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17 changes: 17 additions & 0 deletions README.md
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Expand Up @@ -25,6 +25,23 @@ composer require knplabs/knp-snappy

## Usage

> ⚠️ **Security Warning**
>
> The `--enable-local-file-access` option in `wkhtmltopdf` can be risky if used with untrusted HTML or JavaScript.
> This may expose local files or lead to remote code execution.
>
> To stay safe:
> - Avoid enabling `--enable-local-file-access` unless necessary.
> - Always sanitize user input before processing.
> - Run `wkhtmltopdf` in a sandbox like **AppArmor** or **SELinux**.
> - For untrusted content, consider alternatives like **WeasyPrint**, **Prince**, or **Puppeteer**.
>
> This risk was responsibly reported by
> **Nikita Sveshnikov (Positive Technologies)**.
>
> 🔗 [Official recommendations](https://wkhtmltopdf.org/status.html#recommendations)


### Initialization
```php
<?php
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