CVE-2020-26298

Advisory lineage Upstream: 0 Downstream: 5
Modified
Published: 11 Jan 2021, 00:00
Last modified:13 Feb 2025, 16:27

Vulnerability Summary

Overall Risk (default)
medium
27/100
CVSS Score
6.8 MEDIUM
v3.1 (cve.org)
EPSS Score
1.13% LOW
1% probability +0.79%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

11 Jan 2021, 00:00
Published
Vulnerability first disclosed
13 Feb 2025, 16:27
Last Modified
Vulnerability information updated

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 Metrics

  • v3.1•MEDIUM•Score: 6.8CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:H/A:N
  • v3.1•MEDIUM•Score: 5.4CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
  • v2.0•LOW•Score: 3.5AV:N/AC:M/Au:S/C:N/I:P/A:N

EPSS Trends

Current EPSS score: 1.13%• Percentile: 79%

Techniques & Countermeasures

  • CWE-74•Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

    The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.

  • CWE-79•Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

    The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

Affected Systems

  • debian•debian_linux

    9.0 | 10.0

  • redcarpet_project•redcarpet

    < 3.5.1

  • vmg•redcarpet

    < 3.5.1

References (9)