CSP: X-WebKit-CSP
CSP is a security standard that helps protect web applications from various types of attacks. One of the directives in CSP is the 'X-WebKit-CSP' header, which is specific to WebKit-based browsers. The vulnerability 'CSP: X-WebKit-CSP' is related to the header, which means that the header is either missing or incorrectly configured, leaving the web application open to attacks.