THREATPORT/VULNERABILITY/CVE-2021-23639
CRITICAL SEVERITY

CVE-2021-23639

Markdown To Pdf vulnerability

CVSS
9.8
EPSS
5.3%
EPSS pct
92th
Exploited
No known
The package md-to-pdf before 5.0.0 are vulnerable to Remote Code Execution (RCE) due to utilizing the library gray-matter to parse front matter content, without disabling the JS engine.
Affected vendor
Markdown To Pdf Project
Affected product
Markdown To Pdf
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
2021-12-10

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to high impact to confidentiality, high impact to integrity, high impact to availability.

Its EPSS score of 5.3% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 92% of all scored CVEs.

Check your external exposure to CVE-2021-23639

  • Confirm whether Markdown To Pdf Project Markdown To Pdf is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2021-23639.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2021-23639

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2021-23639 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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Are you exposed to CVE-2021-23639?

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