CVE-2023-2318

Name: CVE-2023-2318
Creator: NVD / NIST
Published: 2023-08-19T06:15:46.883+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.6/10EPSS 0.48%

Last modified Jun 17, 2026

CVE-2023-2318 is a critical-severity vulnerability rated 9.6/10 on the CVSS scale. DOM-based XSS in src/muya/lib/contentState/pasteCtrl.js in MarkText 0.17.1 and before on Windows, Linux and macOS allows arbitrary JavaScript code to run in the context of MarkText main window. This vulnerability can be exploited if a user copies text from a malicious webpage and paste it into MarkText.. EPSS estimates a 0.48% chance of exploitation in the next 30 days.

Description

DOM-based XSS in src/muya/lib/contentState/pasteCtrl.js in MarkText 0.17.1 and before on Windows, Linux and macOS allows arbitrary JavaScript code to run in the context of MarkText main window. This vulnerability can be exploited if a user copies text from a malicious webpage and paste it into MarkText.

Metrics

CVSS 3.1

9.6/10

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

EPSS Probability

0.48%

38.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Marktext	Marktext	<= 0.17.1

References

https://github.com/marktext/marktext/issues/3618Exploit, Issue Tracking
https://starlabs.sg/advisories/23/23-2318/Exploit, Third Party Advisory
https://github.com/marktext/marktext/issues/3618Exploit, Issue Tracking
https://starlabs.sg/advisories/23/23-2318/Exploit, Third Party Advisory

Timeline

Published: Aug 19, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-2318?

How severe is CVE-2023-2318?

CVE-2023-2318 has a CVSS score of 9.6/10 (CRITICAL severity). The EPSS model estimates a 0.48% probability of exploitation in the next 30 days.

How do I fix CVE-2023-2318?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-2318?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST