CVE-2024-24753

Summary

CVE-2024-24753 is a vulnerability affecting Bref, a serverless PHP application for AWS Lambda. When used with an API Gateway in v2 format, Bref fails to handle multiple value headers properly. PHP responses with conflicting header keys result in only the last one being kept, potentially undermining an application's security. This issue is particularly significant when an application requires multiple headers with the same key for security reasons, such as `Content-Security-Policy` headers. The vulnerability is addressed in version 2.1.13 of Bref.

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