ZDI-25-414: Ruby WEBrick read_header HTTP Request Smuggling Vulnerability

This vulnerability allows remote attackers to smuggle arbitrary HTTP requests on affected installations of Ruby WEBrick. This issue is exploitable when the product is deployed behind an HTTP proxy that fulfills specific conditions. The ZDI has assigned a CVSS rating of 6.5. The following CVEs are assigned: CVE-2025-6442.