Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2020-26298

16
FAUCET Score

CVE-2020-26298 is a cross-site scripting (XSS) injection vulnerability in the Redcarpet Ruby library, affecting versions prior to 3.5.1. The flaw stems from a lack of HTML escaping when processing quotes, even when the escape_html option was enabled. This vulnerability carries a CVSS score of 5.4 MEDIUM, indicating it can be exploited with low complexity by a low-privileged attacker, requiring user interaction, and potentially leading to limited impact on confidentiality and integrity. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 3.5.1CPE matchmatch criteria
cpe:2.3:a:redcarpet_project:redcarpet:*:*:*:*:*:ruby:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
10.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.8MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
2.3
Impact Score
4.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.57%
Probability of exploitation in next 30 days
EPSS Percentile
72.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0157 is in the 96th percentile among its peer group of 15,239 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

github_advisorypatch availablevia nvd_reference
View patch
rubygemspatch availablevia ghsa
Product: redcarpetFixed in: 3.5.1
redhatno patchvia redhat_api
Product: Red Hat 3scale API Management Platform 2Fixed in: redcarpet

Vendor Advisories (2)

rubygemsGHSA-q3wr-qw3g-3p4hmedium

Injection/XSS in Redcarpet

Jan 11, 2021
redhatCVE-2020-26298Moderate

rubygem-redcarpet: does not escape HTML when processing quotes which could result in XSS vulnerability

Jan 11, 2021

References

github.com / advisories/GHSA-q3wr-qw3g-3p4h
Third Party Advisory
github.com / vmg/redcarpet/blob/master/CHANGELOG.md
Release NotesThird Party Advisory
github.com / vmg/redcarpet/commit/a699c82292b17c8e6a62e1914d5eccc252272793
PatchThird Party Advisory
lists.debian.org / debian-lts-announce/2021/01/msg00014.html
Mailing ListThird Party Advisory
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
ProductThird Party Advisory
debian.org / security/2021/dsa-4831
Third Party Advisory