CVE-2006-5467: Yukihiro Matsumoto Ruby

Medium severity, CVSS 5.0. EPSS: 4.5% chance of exploitation in the next 30 days.

The cgi.rb CGI library for Ruby 1.8 allows remote attackers to cause a denial of service (infinite loop and CPU consumption) via an HTTP request with a multipart MIME body that contains an invalid boundary specifier, as demonstrated using a specifier that begins with a "-" instead of "--" and contains an inconsistent ID.

Affected products

• Yukihiro Matsumoto Ruby: version 1.8 only

Published 2006-10-27. Last modified 2026-06-16.