CVE-2006-6303: Yukihiro Matsumoto Ruby

Medium severity, CVSS 5.0. EPSS: 3.8% chance of exploitation in the next 30 days.

The read_multipart function in cgi.rb in Ruby before 1.8.5-p2 does not properly detect boundaries in MIME multipart content, which allows remote attackers to cause a denial of service (infinite loop) via crafted HTTP requests, a different issue than CVE-2006-5467.

Affected products

• Yukihiro Matsumoto Ruby: version 1.8 only; version 1.8.1 only; version 1.8.2 only; version 1.8.2_pre1 only; version 1.8.2_pre2 only; version 1.8.3 only; …

Published 2006-12-06. Last modified 2026-06-16.