CVE-2023-1004Public exploit

Code execution via retained JScript links

Published Feb 24, 2023 · Updated Nov 22, 2024

Code injection in MarkText 0.17.0 through 0.17.1 on Windows allows local users to execute code after a victim clicks a crafted link. The Markdown link filter retains .js targets, and Windows treats the linked file as a Windows Script Host JScript program rather than inert content. Execution requires a user to open the crafted document and click its JavaScript link, after which the script runs commands with that user's privileges.

CVSS severity7.8
High
EPSS probability0.38%
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 MarkText 0.17.0 through 0.17.1 on Windows allows local users to execute code after a victim clicks a crafted link. The Markdown link filter retains .js targets, and Windows treats the linked file as a Windows Script Host JScript program rather than inert content. Execution requires a user to open the crafted document and click its JavaScript link, after which the script runs commands with that user's privileges.

The record

CVE
CVE-2023-1004
Published
Feb 24, 2023
Updated
Nov 22, 2024
Vendor
MarkText
Product
MarkText
Classifications
CWE-94, T1204.002, T1059.007
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 24, 2023CVE publishedPublication date reported by the CVE source.
  2. Nov 22, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0.17.0
  2. Affected versionversion=0.17.1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

MarkText · MarkTextversion=0.17.0; version=0.17.1

Published CVSS scores

7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
5.3VulDBCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
4.3VulDBAV:L/AC:L/Au:S/C:P/I:P/A:P

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

CWE-94Improper Control of Generation of Code ('Code Injection')
T1204.002Malicious File
T1059.007JavaScript/JScript

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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