CVE-2012-2671
The Rack::Cache rubygem 0.3.0 through 1.1 caches Set-Cookie and other sensitive headers, which allows attackers to obtain sensitive cookie information, hijack web sessions, or have other unspecified impact by accessing the cache.
Date published : 2012-06-16
https://github.com/rtomayko/rack-cache/blob/master/CHANGES
https://github.com/rtomayko/rack-cache/commit/2e3a64d07daac4c757cc57620f2288e865a09b90