What’s Vulnerable › Vulnerabilities

CVE-2023-2318: MarkText DOM-Based Cross-site Scripting leading to Remote Code Execution

• Severity: critical (CVSS 9.6 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2023-08-19 · updated 2026-06-17
• Weakness: CWE-79

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.

Affected products

• MarkText: through 0.17.1

References

• https://github.com/marktext/marktext/issues/3618
• https://starlabs.sg/advisories/23/23-2318/
• https://github.com/marktext/marktext/issues/3618
• https://starlabs.sg/advisories/23/23-2318/

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