Debian LTS: DLA-1541-1: jekyll security update
Summary
For Debian 8 "Jessie", this problem has been fixed in version
2.2.0+dfsg-2+deb8u1.
We recommend that you upgrade your jekyll packages.
Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS