This blog post explains a newly identified bypass for the CloudFront WAF that targets the trending React2Shell vulnerability, tracked as CVE-2025-55182. This vulnerability allows remote code execution (RCE) in certain React applications, making it a critical security issue. CloudFront WAF, Amazon's web application firewall, is designed to block exploitation attempts including RCE attacks. However, security researchers found a reliable bypass method allowing attackers to circumvent WAF protections and exploit the vulnerability successfully.
If you are a bug bounty hunter or security researcher working on targets protected by CloudFront WAF and are facing blocks when trying to exploit the React2Shell vulnerability, this bypass method could help you. The researcher suggests collaboration via direct message for details on how to implement the bypass payload effectively.
This finding underscores the need for continuous evaluation and improvement of WAF rules to defend against sophisticated exploit techniques targeting modern vulnerabilities in web applications.
For more details, check out the original tweet here: https://twitter.com/ErikPham141/status/1997662083509330229