A ruby-redcarpet security update has been released for Debian GNU/Linux 9 LTS to address an injection vulnerability which can enable a cross-site scripting attack.

DLA 2526-1: ruby-redcarpet security update

- -----------------------------------------------------------------------
Debian LTS Advisory DLA-2526-1 debian-lts@lists.debian.org
  https://www.debian.org/lts/security/ Utkarsh Gupta
January 15, 2021   https://wiki.debian.org/LTS
- -----------------------------------------------------------------------

Package : ruby-redcarpet
Version : 3.3.4-2+deb9u1
CVE ID : CVE-2020-26298
Debian Bug : 980057

In Redcarpet before version 3.5.1, there is an injection
vulnerability which can enable a cross-site scripting attack.

In affected versions, no HTML escaping was being performed when
processing quotes. This applies even when the `:escape_html`
option was being used.

For Debian 9 stretch, this problem has been fixed in version
3.3.4-2+deb9u1.

We recommend that you upgrade your ruby-redcarpet packages.

For the detailed security status of ruby-redcarpet please refer to
its security tracker page at:
  https://security-tracker.debian.org/tracker/ruby-redcarpet

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