Is CVE-2023-53940 in the CISA KEV catalog?

No. CVE-2023-53940 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2023-53940?

CVE-2023-53940 has a CVSS v3 base score of 7.8 (HIGH).

What is the EPSS score for CVE-2023-53940?

CVE-2023-53940 has an EPSS score of 0.17% (6th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix or mitigate CVE-2023-53940?

No published fix for CVE-2023-53940 has been found yet. Check the linked vendor advisories for guidance as it becomes available.

CVE & CISA-KEV Catalog

CVE-2023-53940

HIGH

7.8

CVSS v3

NVD

Description

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.

CWE-94Code Injection

How to fix

No published remediation has been found for this vulnerability's affected products yet.

Mitigation guidance may be in the linked vendor advisories in the References section below.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

0.17%probability of exploitation in 30 days

6thpercentile

Low risk: more likely to be exploited than 6% of all known CVEs.

References

Other references3

Related Vulnerabilities

Other CWE-94 (Code Injection) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2017-9841	Critical	9.8	100%	KEV	Fix
CVE-2015-1635	Critical	9.8	100%	KEV	-
CVE-2022-22954	Critical	9.8	100%	KEV + Ransom	-
CVE-2021-22204	Medium	6.8	100%	KEV	Fix
CVE-2025-3248	Critical	9.8	100%	KEV	Fix
CVE-2012-0158	High	8.8	100%	KEV	-

Embed a live status badge for CVE-2023-53940

Markdown

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HTML

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-12-19.