Summary

Code Block macro content that includes a REST API endpoint will cause the page to freeze when loading.

Environment

Confluence Cloud

Steps to Reproduce

1. Create a page
2. Insert a Code Block Macro
3. Input the below XML code to the Code Block macro

   UTF-8</con:encoding><con:endpoint>https://test.atlassian.net/admin/rest/um/1/usermanagement</con:endpoint><con:request><![CDATA[<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/">
      <soapenv:Header>
         <hd:Header xmlns:hd="http://www.test.co/header/types">
            <hd:VendorId>999111</hd:VendorId>
            <hd:TransactionId>${=java.util.UUID.randomUUID()}</hd:TransactionId>
            <hd:Timestamp>${=new java.text.SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ssXXX").format(new Date())}</hd:Timestamp>
         </hd:Header>
      </soapenv:Header>
   

4. Make sure to change the Highlight Syntax to HTML and XML
5. Save the Code Block Macro
6. Publish the page
7. Access the page

Expected Results

• The content of the code block macro should not cause the page/browser to freeze.

Actual Results

• The content of the code block macro is causing the page/browser to freeze.

Workaround

• Change the Highlight Syntax to None