What are template injections?

Template injection is a class of vulnerabilities that are commonly found in web applications. These vulnerabilities consist of any vulnerability that results from parsing unvalidated input that is mistakenly evaluated as code by a templating engine.

Where is a server-side template injection executed?

Server-side template injection occurs when user-controlled input is embedded into a server-side template, allowing users to inject template directives. This allows an attacker to inject malicious template directives and possibly execute arbitrary code on the affected server.

What is server injection?

SSI injection (Server-side Include) is a server-side exploit that lets an attacker send code into an application to be executed later, locally, by the web server. SSI injection attacks can only be successful when the web server permits SSI execution without proper validation.

What is a server-side template?

Server-side templates allow developers to pre-populate a web page with custom user data directly on the server. After all, it is often faster to make all the requests within a server than to make extra browser-to-server roundtrips for them.

What are template engines used for?

A template engine enables you to use static template files in your application. At runtime, the template engine replaces variables in a template file with actual values, and transforms the template into an HTML file sent to the client. This approach makes it easier to design an HTML page.

What is client side template injection?

Description: Client-side template injection Client-side template injection vulnerabilities arise when applications using a client-side template framework dynamically embed user input in web pages. When a web page is rendered, the framework will scan the page for template expressions, and execute any that it encounters.

Which template engine is best?

Node. js templating engine: Top 10 best every developer must know

• Pug – most common Node. js templating engine in use.
• Underscore. Underscore.
• mustache. js – Logic-less {{mustache}} templates with JavaScript.
• Jade. Full documentation is at jade-lang.com.
• Nunjucks Node. js templating engine.
• ejs.
• doT – great Node.
• Squirrelly.

Are template engines Good?

Using template engines for complex front end rendering is bad and not a good practice.