[CVE-2019-15224] Version 1.6.13 published with malicious backdoor. · Issue #713 · rest-client/rest-client
rest-client and Other Gems Yanked Due to Malicious Code — The problem is now resolved, but the rest-client maintainer’s Rubygems.org account was hacked and versions 1.6.10-1.6.13 contained a malicious backdoor. Ensure you are not using it, and set up multi-factor authentication on your own Rubygems.org account to help avoid similar issues. A variety of other, less popular gems have also been affected, all with relatively (thankfully) fewer downloads.