Sensitive cookie without HttpOnly attribute

Description

The {cookie_name} cookie was transmitted in a Set-Cookie header without the HttpOnly attribute set. To prevent JavaScript being able to access the cookie value - usually via document.cookies - all cookies that are used for authorization or contain sensitive information should have the HttpOnly attribute set.

Remediation

Most web application frameworks allow configuring how cookies are sent to user-agents. Consult your framework’s documentation for more information on how to enable various security directives when assigning cookies to clients.

If the application is assigning cookies via writing to the response headers directly, ensure all responses include the HttpOnly attribute. By enabling this protection, the application is able to mitigate the impact of certain Cross-Site Scripting (XSS) attacks.

Example:

Set-Cookie: {cookie_name}=<random secure value>; HttpOnly

Details

ID Aggregated CWE Type Risk
1004.1 false 1004 Passive Low