Cross Site Scripting Vulnerability on "Files" upload file SVG in Monstra 3.0.4

[Songohan22]

Describe the bug
An authenticated malicious user can take advantage of a Stored XSS vulnerability in the "Files" feature.
Monstra application allows the upload of a SVG file extension (which is also an image type).
** Reproduce**
Steps to reproduce the behavior:

1. Login into the panel Monstra
2. Go to "/admin/index.php?id=filesmanager&path=uploads/"
3. Upload file abc.svg:

4. Open file upload : "/public/uploads/abc.svg"
5. View the preview to trigger XSS.
6. View the preview to get in request and such Stored XSS.
   Impact
   Commonly include transmitting private data, like cookies or other session information, to the attacker, redirecting the victim to web content controlled by the attacker, or performing other malicious operations on the user’s machine under the guise of the vulnerable site.
   Screenshots
   
   Desktop (please complete the following information):

• OS: Kali
• Browser: Firefox
• Version of Browser: 68.6