A security researcher named @k_firsov has discovered a way to bypass the Web Application Firewall (WAF) used by Vercel, a popular platform for front-end frameworks and static sites. This bypass allows attackers to evade protections put in place by Vercel's WAF, potentially exposing web applications to various attacks. The specifics of the payload or method were not detailed in the tweet, but such bypasses generally involve manipulating HTTP requests or payload encoding to circumvent filtering rules. Understanding and sharing these bypasses helps improve WAFs by highlighting their weaknesses, leading to stronger security measures in future updates. It is essential for developers and security teams using Vercel to stay informed about such vulnerabilities and to apply patches or mitigations when available.
Check out the original tweet here: https://twitter.com/hetmehtaa/status/1997997787901022621