Ruby on Rails before 1.1.5 allows remote attackers to execute Ruby code with "severe" or "serious" impact via a File Upload request with an HTTP header that modifies the LOAD_PATH variable, a different vulnerability than CVE-2006-4112.
http://www.vupen.com/english/advisories/2006/3237
http://www.securityfocus.com/bid/19454
http://www.novell.com/linux/security/advisories/2006_21_sr.html
http://www.gentoo.org/security/en/glsa/glsa-200608-20.xml
http://weblog.rubyonrails.org/2006/8/9/rails-1-1-5-mandatory-security-patch-and-other-tidbits
http://securitytracker.com/id?1016673
http://secunia.com/advisories/21749
http://secunia.com/advisories/21466
http://blog.koehntopp.de/archives/1367-Ruby-On-Rails-Mandatory-Mystery-Patch.html