Put HTTP Method

The PUT [[HTTP Verbs|HTTP method]] is used in web development as part of the [[HTTP protocol]] to update or replace the resource identified by a specific URL. It's one of the methods defined by the HTTP/1.1 specification and is commonly utilized in [[REST APIs|RESTful APIs]] and web services for modifying existing resources.

PUT requests are used to send data to the server to update or replace the resource at the specified URL. PUT is idempotent, meaning that making multiple identical PUT requests has the same effect as making a single request. The data to be updated or replaced is typically included in the body of the PUT request.

If proper authentication and authorization controls are not in place, an attacker might exploit the PUT method to modify content or data. For instance, without adequate security checks, an attacker could send a PUT request to modify sensitive data or configuration files.

Insecurely implemented PUT requests can lead to data integrity issues, where critical information is altered or overwritten unintentionally or maliciously. Like other HTTP methods, the data included in PUT requests should be validated and sanitized to prevent injection attacks, such as [[SQL injection]], and to ensure that the data conforms to expected formats.