CVE-2023-2318Public exploit

System command execution via unsanitized pasted link text

Published Aug 19, 2023 · Updated Oct 7, 2024

DOM-based XSS in MarkText 0.17.1 and earlier allows attackers to execute system commands through content pasted from a malicious webpage. In src/muya/lib/contentState/pasteCtrl.js, the no-title path assigns an original link's textContent to a span's innerHTML without sanitization. Exploitation requires a user to copy from an attacker-controlled webpage and paste into the editor, after which JavaScript runs in the main window and can invoke child processes.

CVSS severity8.6
High
EPSS probability0.54%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

DOM-based XSS in MarkText 0.17.1 and earlier allows attackers to execute system commands through content pasted from a malicious webpage. In src/muya/lib/contentState/pasteCtrl.js, the no-title path assigns an original link's textContent to a span's innerHTML without sanitization. Exploitation requires a user to copy from an attacker-controlled webpage and paste into the editor, after which JavaScript runs in the main window and can invoke child processes.

The record

CVE
CVE-2023-2318
Published
Aug 19, 2023
Updated
Oct 7, 2024
Vendor
MarkText
Product
MarkText
Classifications
CWE-79, CAPEC-588, CAPEC-549, T1059, T1204
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 19, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 7, 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=0 <=0.17.1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

MarkText · MarkTextversion=0 <=0.17.1

Published CVSS scores

8.6STAR Labs SG Pte. Ltd.CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
9.6NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/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-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CAPEC-588DOM-Based XSS
CAPEC-549Local Execution of Code
T1059Command and Scripting Interpreter
T1204User Execution

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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