The tweet describes a successful bypass of a WAF using a XSS payload. The attacker was unable to bypass the WAF by extracting the parameter from the URL using a regex. However, by sending the parameter in the hash instead of the search, the payload still successfully matched in the application function but not in the WAF. This highlights a potential evasion technique for bypassing WAF protection. The WAF vendor is not specified, but the bypass technique could be applicable to various WAF products. It's important for organizations to be aware of such bypass techniques to strengthen their security defenses.
For more insights, check out the original tweet here: https://twitter.com/elmehdimee/status/1893387888181535154. And don’t forget to follow @elmehdimee for more exciting updates in the world of cybersecurity.