Security Advisory

CVE-2024-21647

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2024-01-08 13:45:27

Last updated 2025-11-03 21:53:27

Assigner GitHub_M

State PUBLISHED

Description

Puma is a web server for Ruby/Rack applications built for parallelism. Prior to version 6.4.2, puma exhibited incorrect behavior when parsing chunked transfer encoding bodies in a way that allowed HTTP request smuggling. Fixed versions limits the size of chunk extensions. Without this limit, an attacker could cause unbounded resource (CPU, network bandwidth) consumption. This vulnerability has been fixed in versions 6.4.2 and 5.6.8.

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