This exposure is classified as an Information Disclosure vulnerability. It doesn't directly hack the server, but it provides the "blueprint" for an attack. By navigating through the indexframe , malicious actors could locate password files, database paths, or scripts with known exploits.
Which of these fits the of your website best? If you tell me what the site is about, I can give you a specific recommendation! view indexframe shtml link
There are two ways to use the include command, but virtual is usually your best bet: This exposure is classified as an Information Disclosure
The link indexframe.shtml is historically significant in the field of web security. It typically points to a default administrative page used by the (a component of older Internet Information Services, or IIS). malicious actors could locate password files
curl -v "https://example.com/index.shtml?view=indexframe"