Vulnerability DatabaseCVE-2020-26298
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CVE-2020-26298
January 11, 2021
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.
Affected Packages
redcarpet (RUBY):
Affected version(s) >=1.0.0 <3.5.1
Fix Suggestion:
Update to version 3.5.1
Related Resources (15)
https://github.com/vmg/redcarpet/commit/a699c82292b17c8e6a62e1914d5eccc252272793
https://github.com/rubysec/ruby-advisory-db/blob/master/gems/redcarpet/CVE-2020-26298.yml
https://www.debian.org/security/2021/dsa-4831
https://github.com/advisories/GHSA-q3wr-qw3g-3p4h
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FNO4ZZUPGAEUXKQL4G2HRIH7CUZKPCT6
https://rubygems.org/gems/redcarpet
https://github.com/vmg/redcarpet/blob/master/CHANGELOG.md#version-351-security
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BFMYDIONVWATY7EB6EARDVXT47AYCRNM
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PXNNWHHAPREDM3XJDACYRTK7DBMUONBI
https://nvd.nist.gov/vuln/detail/CVE-2020-26298
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FNO4ZZUPGAEUXKQL4G2HRIH7CUZKPCT6/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PXNNWHHAPREDM3XJDACYRTK7DBMUONBI/
https://github.com/vmg/redcarpet
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BFMYDIONVWATY7EB6EARDVXT47AYCRNM/
https://lists.debian.org/debian-lts-announce/2021/01/msg00014.html
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CVSS v4
Base Score:
8.2
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
PASSIVE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
HIGH
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
HIGH
Subsequent System Availability
NONE
CVSS v3
Base Score:
6.8
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
NONE
CVSS v2
Base Score:
3.5
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
SINGLE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
Weakness Type (CWE)
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-79
Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
CWE-74
EPSS
Base Score:
0.33