CVE-2020-26298: Injection in Redcarpet
First published: Mon Jan 11 2021(Updated: )
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.
Credit: security-advisories@github.com security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| rubygems/redcarpet | <3.5.1 | 3.5.1 |
| Redcarpet Project Redcarpet | <3.5.1 | |
| Debian Debian Linux | =9.0 | |
| Debian Debian Linux | =10.0 | |
| debian/ruby-redcarpet | 3.4.0-4+deb10u1 3.5.1-1 3.6.0-1 |
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Reference Links
- https://security-tracker.debian.org/tracker/CVE-2020-26298
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-26298
- https://github.com/vmg/redcarpet/commit/a699c82292b17c8e6a62e1914d5eccc252272793
- https://github.com/advisories/GHSA-q3wr-qw3g-3p4h (Advisory)
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=980057
- https://github.com/vmg/redcarpet/blob/master/CHANGELOG.md#version-351-security
- https://rubygems.org/gems/redcarpet
- https://nvd.nist.gov/vuln/detail/CVE-2020-26298
- https://lists.debian.org/debian-lts-announce/2021/01/msg00014.html
- https://www.debian.org/security/2021/dsa-4831
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/redcarpet/CVE-2020-26298.yml
- 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/FNO4ZZUPGAEUXKQL4G2HRIH7CUZKPCT6/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PXNNWHHAPREDM3XJDACYRTK7DBMUONBI/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BFMYDIONVWATY7EB6EARDVXT47AYCRNM/
- 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/
Frequently Asked Questions
What is CVE-2020-26298?
CVE-2020-26298 is a vulnerability in the Redcarpet Ruby library that allows for a cross-site scripting attack.
How does CVE-2020-26298 affect Redcarpet?
CVE-2020-26298 allows for HTML injection in Redcarpet, potentially enabling a cross-site scripting attack.
What is the severity of CVE-2020-26298?
The severity of CVE-2020-26298 is rated as medium, with a severity value of 6.8.
How can I fix CVE-2020-26298?
To fix CVE-2020-26298, update Redcarpet to version 3.5.1 or later.
Where can I find more information about CVE-2020-26298?
You can find more information about CVE-2020-26298 on the following references: [link 1](https://github.com/vmg/redcarpet/commit/a699c82292b17c8e6a62e1914d5eccc252272793), [link 2](https://github.com/vmg/redcarpet/blob/master/CHANGELOG.md#version-351-security), [link 3](https://rubygems.org/gems/redcarpet).
- collector/github-advisory-latest
- alias/GHSA-q3wr-qw3g-3p4h
- alias/CVE-2020-26298
- collector/debian-bugs
- collector/security-tracker-debian
- collector/nvd-index
- agent/author
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- agent/softwarecombine
- collector/github-advisory
- source/GitHub
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- source/NVD
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- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/title
- agent/first-publish-date
- agent/event
- agent/tags
- agent/trending
- package-manager/rubygems
- package-manager/debian
- vendor/redcarpet project
- canonical/redcarpet project redcarpet
- vendor/debian
- canonical/debian debian linux
- version/debian debian linux/9.0
- version/debian debian linux/10.0