Issue Summary

This is reproducible on Data Center: yes

Pages and blogs containing path traversal strings (../ ..\ .../ ...) cannot be saved using a close button. The 400 error shows up. 

Steps to Reproduce

1. Create a new template
2. create a new page from template (try your custom template, blog post, other templates like DACI, etc)
3. put ../ ..\ .../ ...\ in the title and body
4. close the edit mode using Close button

OR

1. Create a new page with ../ ..\ .../ ...\ in the body and in the title
2. copy the page
3. close the new page using Close button.

Expected Results

The draft should be saved.

Actual Results

The page shows 400

following endpoints are causing 400 error:

• docreateblogpost.action
• docreatepagefromtemplate.action
• docreatepage.action 

Workaround

Remove ../ ..\ .../ ...\ strings from the input fields. Save the page using Publish button.