CSP nonce

CSP nonce stands for Content Security Policy nonce. A nonce is a cryptographic value that is used to prevent cross-site scripting (XSS) attacks in web applications.

In the context of CSP, a nonce is a randomly generated value that is included in the CSP header of a web page. The server generates a new nonce value for each request and includes it in the CSP header. The browser then checks if the inline scripts or styles in the web page have a matching nonce value. If the nonce value matches, the browser allows the execution of the inline scripts or styles; otherwise, it blocks them.

By using nonce values, CSP provides an additional layer of security by preventing unauthorized scripts or styles from executing on a web page. This helps protect against XSS attacks where an attacker injects malicious scripts or styles into a web application