GitHub Advisoryadvisory · RubyGems

GHSA-c2f4-cvqm-65w2 Puma HTTP Request/Response Smuggling vulnerability

MEDIUM Published 2024-01-08 Modified 2025-11-04 Official page ↗
Aliases
CVE-2024-21647
Ecosystem
RubyGems
Packages
puma
Severity
Moderate
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses
CWE-444
Reviewed
2024-01-08

Affected packages

• RubyGems puma: >= 6.0.0, < 6.4.2 → fixed in 6.4.2 • RubyGems puma: < 5.6.8 → fixed in 5.6.8

Description

Impact Prior to versions 6.4.2 and 5.6.8, puma exhibited dangerous behavior when parsing chunked transfer encoding bodies. Fixed versions limit the size of chunk extensions. Without this limit, an attacker could cause unbounded resource (CPU, network bandwidth) consumption. Patches The vulnerability has been fixed in 6.4.2 and 5.6.8. Workarounds No known workarounds. References • HTTP Request Smuggling • Open an issue in Puma • See our security policy

Related

Alias · CVE (1)

  • CVE-2024-21647 Puma is a web server for Ruby/Rack applications built for parallelism. vulnerability

Weakness · CWE (1)

  • CWE-444 Inconsistent Interpretation of HTTP Requests weakness

References