The tweet mentions a Stored XSS vulnerability and a Characters Limitation Bypass used to bypass a Web Application Firewall. The WAF vendor is unspecified in the tweet. The post could include details about the specific payload used, the impact of the bypass, and how it affected the WAF's defenses. Additional information about the vulnerability's discovery and the technical details of the bypass would enhance the blog post.
For more insights, check out the original tweet here: https://twitter.com/MaconF67102/status/1821768150074933552