CVE-2023-1003Public exploit

Code execution via permitted JScript file links

Published Feb 24, 2023 · Updated Aug 2, 2024

Code injection in Typora 1.5.0 through 1.5.5 on Windows allows attackers to execute code after a user opens a crafted Markdown file. The dangerous-suffix filter leaves .js links permitted, and Windows Script Host interprets a downloaded payload as executable JScript. Exploitation requires interaction with the malicious document or link and runs the script with the user's privileges.

CVSS severity7.8
High
EPSS probability0.37%
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 Typora 1.5.0 through 1.5.5 on Windows allows attackers to execute code after a user opens a crafted Markdown file. The dangerous-suffix filter leaves .js links permitted, and Windows Script Host interprets a downloaded payload as executable JScript. Exploitation requires interaction with the malicious document or link and runs the script with the user's privileges.

The record

CVE
CVE-2023-1003
Published
Feb 24, 2023
Updated
Aug 2, 2024
Vendor
Qiyun (Shanghai) Technology Ltd.
Product
Typora
Classifications
CWE-94, T1059.007, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

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

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=1.5.0
  2. Affected versionversion=1.5.1
  3. Affected versionversion=1.5.2
  4. Affected versionversion=1.5.3
  5. Affected versionversion=1.5.4
  6. Affected versionversion=1.5.5

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Qiyun (Shanghai) Technology Ltd. · Typoraversion=1.5.0; version=1.5.1; version=1.5.2; version=1.5.3; version=1.5.4; version=1.5.5

Published CVSS scores

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
7.8NIST NVDCVSS: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

CWE-94Improper Control of Generation of Code ('Code Injection')
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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