GHSA-gwfg-cqmg-cf8fHighCVSS 7.5

WEBRick vulnerable to HTTP Request/Response Smuggling

Published
May 24, 2022
Last Modified
May 30, 2025

🔗 CVE IDs covered (1)

📋 Description

An issue was discovered in Ruby through 2.5.8, 2.6.x through 2.6.6, and 2.7.x through 2.7.1. WEBrick, a simple HTTP server bundled with Ruby, had not checked the transfer-encoding header value rigorously. An attacker may potentially exploit this issue to bypass a reverse proxy (which also has a poor header check), which may lead to an HTTP Request Smuggling attack.

🎯 Affected products3

  • rubygems/webrick:= 1.6.0
  • rubygems/webrick:= 1.5.0
  • rubygems/webrick:< 1.4.4

🔗 References (16)