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Vulnerabilities

Vulnerability · CVE-2023-53940

Codigo Markdown Editor 1.0.1 contains a code execution vulnerability that allows attackers to run arbitrary system commands by crafting a malicious markdown file.

Published Dec 18, 2025 · catalog updated Apr 7, 2026 · Alfonzm Codigo Markdown Editor

Last checked Nov 2, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2023-53940. EPSS is 0.20%. Act only if a listed version of Alfonzm Codigo Markdown Editor is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High8.4
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.20%
Remediation
Vendor / distro source
Affected products
vendor Alfonzm Codigo Markdown Editor 1.0.1

Codigo Markdown Editor 1.0.1 contains a code execution vulnerability that allows attackers to run arbitrary system commands by crafting a malicious markdown file. Attackers can embed a video source with an onerror event that executes shell commands through Node.js child_process module when the file is opened.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor Alfonzm Codigo Markdown Editor 1.0.11.0.1

How to fix CVE-2023-53940

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2023-53940. EPSS is 0.20%. Act only if a listed version of Alfonzm Codigo Markdown Editor is installed.

Which versions are affected?

Compare what you have installed with Alfonzm Codigo Markdown Editor 1.0.1 1.0.1. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.20%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Dec 18, 2025 · EUVD

    Detected

    Codigo Markdown Editor 1.0.1 contains a code execution vulnerability that allows attackers to run arbitrary system commands by crafting a malicious markdown file. Attackers can embed a video source with an onerror event that executes shell commands through Node.js child_process module when the file is opened.

  2. Apr 7, 2026 · EUVD

    Updated

    Codigo Markdown Editor 1.0.1 contains a code execution vulnerability that allows attackers to run arbitrary system commands by crafting a malicious markdown file. Attackers can embed a video source with an onerror event that executes shell commands through Node.js child_process module when the file is opened.

Sources

  • CVE.orgVulnerability recordCVE-2023-53940

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2023-53940

    30-day exploitation probability 0.20%

    first.org
  • EUVDVulnerability recordEUVD-2025-204338

    Codigo Markdown Editor 1.0.1 contains a code execution vulnerability that allows attackers to run arbitrary system commands by crafting a malicious markdown file. Attackers can embed a video source with an onerror event that executes shell commands through Node.js child_process m

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Nov 2, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSNov 2, 2026
  • CVE.orgOct 30, 2026
  • EUVDOct 30, 2026