CVE-2023-31873Public exploit

Code execution via unsanitized Markdown preview HTML

Published May 28, 2023 · Updated Jan 14, 2025

Code injection in Gin Markdown Editor 0.7.4 allows context-dependent attackers to execute arbitrary code through a crafted Markdown file. The Electron preview executes embedded HTML event handlers with access to Node.js require(), letting an onerror handler invoke child_process without sanitization or isolation. A user must open the file on macOS; successful exploitation runs commands with the editor process's privileges and can read, alter, or delete accessible data.

CVSS severity7.8
High
EPSS probability1.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Code injection in Gin Markdown Editor 0.7.4 allows context-dependent attackers to execute arbitrary code through a crafted Markdown file. The Electron preview executes embedded HTML event handlers with access to Node.js require(), letting an onerror handler invoke child_process without sanitization or isolation. A user must open the file on macOS; successful exploitation runs commands with the editor process's privileges and can read, alter, or delete accessible data.

The record

CVE
CVE-2023-31873
Published
May 28, 2023
Updated
Jan 14, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
T1059.007, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 28, 2023CVE publishedPublication date reported by the CVE source.
  2. Jan 14, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.8NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
7.8CISA-ADPCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

T1059.007JavaScript/JScript
T1204.002Malicious File

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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