GoogleOSV:CVE-2020-26298CVE-2020-26298
Redcarpet is a Ruby library for Markdown processing. 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. This is fixed in version 3.5.1 by the referenced commit.
References
github.com/advisories/GHSA-q3wr-qw3g-3p4h
github.com/vmg/redcarpet/blob/master/CHANGELOG.md#version-351-security
github.com/vmg/redcarpet/commit/a699c82292b17c8e6a62e1914d5eccc252272793
lists.debian.org/debian-lts-announce/2021/01/msg00014.html
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BFMYDIONVWATY7EB6EARDVXT47AYCRNM/
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FNO4ZZUPGAEUXKQL4G2HRIH7CUZKPCT6/
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PXNNWHHAPREDM3XJDACYRTK7DBMUONBI/
rubygems.org/gems/redcarpet
www.debian.org/security/2021/dsa-4831
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