CVE-2020-26307

GHSL-2020-301: Regular Expression Denial of Service (ReDoS) in HTML2Markdown

Published Oct 26, 2024 CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed
Description
HTML2Markdown is a Javascript implementation for converting HTML to Markdown text. All available versions contain one or more regular expressions that are vulnerable to Regular Expression Denial of Service (ReDoS). As of time of publication, no known patches are available.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2020-18858 HTML2Markdown is a Javascript implementation for converting HTML to Markdown text. All available versions contain one or more regular expressions that are vulnerable to Regular Expression Denial of Service (ReDoS). As of time of publication, no known patches are available.
History
Type Values Removed Values Added
Metrics epss

{'score': 0.00235}

epss

{'score': 0.00215}

Type Values Removed Values Added
First Time appeared Kates
Kates html2markdown
CPEs cpe:2.3:a:kates:html2markdown:*:*:*:*:*:*:*:*
Vendors & Products Kates
Kates html2markdown
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description HTML2Markdown is a Javascript implementation for converting HTML to Markdown text. All available versions contain one or more regular expressions that are vulnerable to Regular Expression Denial of Service (ReDoS). As of time of publication, no known patches are available.
Title GHSL-2020-301: Regular Expression Denial of Service (ReDoS) in HTML2Markdown
Weaknesses CWE-1333
References
Metrics cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/U:Green'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Oct 28, 2024, 2:48 PM
Reserved
Oct 1, 2020, 12:00 AM
Status
Deferred
Published
Oct 26, 2024, 9:15 PM
Modified
Jun 17, 2026, 3:08 AM