CVE-2020-26298 Information

Description

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.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Reference

https://github.com/vmg/redcarpet/commit/a699c82292b17c8e6a62e1914d5eccc252272793 https://rubygems.org/gems/redcarpet https://github.com/vmg/redcarpet/blob/master/CHANGELOG.md#version-351-security https://github.com/advisories/GHSA-q3wr-qw3g-3p4h https://lists.debian.org/debian-lts-announce/2021/01/msg00014.html https://www.debian.org/security/2021/dsa-4831

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

REQUIRED

Confidentiality Impact

CHANGED

Integrity Impact

LOW

Availability Impact

LOW

Base Score

NONE

Base Severity

5.4