Cross-Site Scripting in snekserve

Description

All versions of snekserve are vulnerable to Cross-Site Scripting (XSS). The package fails to sanitize filenames, allowing attackers to execute arbitrary JavaScript in the victim’s browser through files with names containing malicious code.

Recommendation

No fix is available yet. Followings are affected versions:

• >= 0.0.0

References

• GHSA-hv4w-jhcj-6wfw
• www.npmjs.com
• CWE-79
• OWASP 2021-A3

Related Issues

• Cross-Site Scripting in jingo - Vulnerability
• html2pdf.js contains a cross-site scripting vulnerability - CVE-2026-22787
• CKEditor 5 cross-site scripting (XSS) vulnerability in the clipboard package - CVE-2025-58064
• QMarkdown Cross-Site Scripting (XSS) vulnerability - CVE-2025-43954

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How to Secure your NodeJs Express Javascript Application - part 1

How to Secure your NodeJs Express Javascript Application - part 2

10 Secure Coding Best Practices to Follow in Every Project

Tags:

npm

snekserve