Hack with confidence.
Page view-someones-blog.php is vulnerable to at least the following:
HTML Injection: It is possible to inject your own HTML into this page because the input is not encoded prior to be used as output. Determine which input field contributes output here and inject HTML, CSS, and/or Javascripts in order to alter the client-side code of this page.
Cross Site Request Forgery: This page is vulnerable to cross-site request forgery. There are a few steps to prepare a cross-site script to carry out the cross-site request forgery. Begin by filling out the form capturing the legitimate request. Inject a stored or reflected cross-site script anywhere on the site that will cause the browser to submit a copy of the legitimate request to the server. The server will process the request as if the user had filled out the form themselves.
Method Tampering: Because the page does not specify that the input parameters must be posted, it is possible to submit input parameters via a post or a get. This is a second order vulnerability allowing other vulnerabilities to be exploited easier.
Insufficent Transport Layer Protection: This page is vulnerable to interception with wireshark or tcpdump.
Reflected Cross-Site Scripting: This page is vulnerable to reflected cross-site scripting because the input is not encoded prior to be used as output. Determine which input field contributes output here and inject scripts. Try to redirect the user to the capture-data.php page which records cookies and other parameters. Visit the captured-data.php page to view captured data.