The rest-client gem 1.6.10 through 1.6.13 for Ruby, as distributed on RubyGems.org, included a code-execution backdoor inserted by a third party. Users of an affected version should consider downgrading to the last non-affected version of 1.6.9, or upgrading to 1.7.x. Additionally, a set of other minor gems have been partially or completely yanked and are included in this advisory. These include cronparser, coinbase, blockchainwallet, awesome-bot, doge-coin, capistrano-colors, bitcoinvanity, litacoin, coming-soon, and omniauthamazon.
rest-client
cron_parser