CVE-2019-10842

Arbitrary code execution (via backdoor code) was discovered in
bootstrap-sass 3.2.0.3, when downloaded from rubygems.org. An
unauthenticated attacker can craft the ___cfduid cookie value with base64
arbitrary code to be executed via eval(), which can be leveraged to execute
arbitrary code on the target system. Note that there are three underscore
characters in the cookie name. This is unrelated to the __cfduid cookie
that is legitimately used by Cloudflare.

Notes