CVE-2023-2317

Name: CVE-2023-2317
Creator: NVD / NIST
Published: 2023-08-19T06:15:46.687+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.6/10EPSS 2.16%

Last modified Jun 17, 2026

CVE-2023-2317 is a critical-severity vulnerability rated 9.6/10 on the CVSS scale. DOM-based XSS in updater/update.html in Typora before 1.6.7 on Windows and Linux allows a crafted markdown file to run arbitrary JavaScript code in the context of Typora main window via loading typora://app/typemark/updater/update.html in <embed> tag. This vulnerability can be exploited if a user opens a malicious markdown file in Typora, or copies text from a malicious webpage and paste it into Typora.. EPSS estimates a 2.16% chance of exploitation in the next 30 days.

Description

DOM-based XSS in updater/update.html in Typora before 1.6.7 on Windows and Linux allows a crafted markdown file to run arbitrary JavaScript code in the context of Typora main window via loading typora://app/typemark/updater/update.html in <embed> tag. This vulnerability can be exploited if a user opens a malicious markdown file in Typora, or copies text from a malicious webpage and paste it into Typora.

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

2.16%

79.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Typora	Typora	< 1.6.7

References

https://starlabs.sg/advisories/23/23-2317/Exploit, Mitigation, Third Party Advisory
https://support.typora.io/What's-New-1.6/Vendor Advisory
https://starlabs.sg/advisories/23/23-2317/Exploit, Mitigation, Third Party Advisory
https://support.typora.io/What's-New-1.6/Vendor Advisory

Timeline

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

Frequently Asked Questions

What is CVE-2023-2317?

How severe is CVE-2023-2317?

CVE-2023-2317 has a CVSS score of 9.6/10 (CRITICAL severity). The EPSS model estimates a 2.16% probability of exploitation in the next 30 days.

How do I fix CVE-2023-2317?

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-2023-2317?

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

Scan your code now

Source: NVD / NIST