Support Center

Burp Community

See what our users are saying about Burp Suite:

How do I?

New Post View All

Feature Requests

New Post View All

Burp Extensions

New Post View All

Bug Reports

New Post View All

Burp Suite Documentation

Take a look at our Documentation section for full details about every Burp Suite tool, function and configuration option.

Burp Suite Professional and Community editions Burp Suite Enterprise Edition
Burp Scanner Burp Collaborator
Burp Infiltrator Full Documentation Contents

Burp Extender

Burp Extender lets you extend the functionality of Burp Suite in numerous ways.

Extensions can be written in Java, Python or Ruby.

API documentation Writing your first Burp Suite extension
Sample extensions View community discussions about Extensibility
  1. Support Center
  2. Issue Definitions
  3. Cross-origin resource sharing: unencrypted origin trusted

Cross-origin resource sharing: unencrypted origin trusted

Description: Cross-origin resource sharing: unencrypted origin trusted

An HTML5 cross-origin resource sharing (CORS) policy controls whether and how content running on other domains can perform two-way interaction with the domain that publishes the policy. The policy is fine-grained and can apply access controls per-request based on the URL and other features of the request.

If a site allows interaction from an origin that uses unencrypted HTTP communications, then it is vulnerable to an attacker who is in a position to view and modify a user's unencrypted network traffic. The attacker can control the responses from unencrypted origins, thereby injecting content that is able to interact with the application that publishes the policy. This means that the application is effectively extending trust to all such attackers, thereby undoing much of the benefit of using HTTPS communications.

Remediation: Cross-origin resource sharing: unencrypted origin trusted

Only trust origins that use encrypted HTTPS communications.


Vulnerability classifications

Typical severity


Type index


Burp Scanner

Burp Scanner

This issue - and many more like it - can be found using our web vulnerability scanner

Read more
Get Burp

Get Burp

Scan your web application from just $399.00

Find out more