Calvin, a software developer, uses a feature that helps him auto-generate the content of a web page without manual involvement and is integrated with SSI directives. This leads to a vulnerability in…

Server-side template injection (SSTI) exploits template engine vulnerabilities such as Jinja2 or Twig, not SSI directives used for auto-generating static page content.

Server-side JavaScript injection targets server-side JavaScript runtimes like Node.js by injecting malicious JS code, not SSI directives processed by the web server.

CRLF injection manipulates HTTP response headers by inserting carriage return and line feed characters, which is unrelated to SSI directives or auto-generated web content.

Server-Side Includes (SSI) injection occurs when a web application integrates SSI directives to auto-generate page content and accepts user input that is embedded into those directives without sanitization. Attackers can inject malicious SSI directives such as exec or include commands to read, modify, or erase server files. The scenario explicitly describes a feature integrated with SSI directives that accepts remote user inputs, which is the defining characteristic of SSI injection.