CVE-2026-46492
High
Description
md-fileserver allows for local viewing of markdown files in a browser. Prior to version 1.10.3, a cross-site scripting (XSS) vulnerability exists in the application’s Markdown rendering logic. When user-supplied Markdown content is rendered, embedded raw HTML—including <script> tags—is processed and injected into the resulting page without sanitization, allowing arbitrary JavaScript execution in the context of the affected domain. This issue has been patched in version 1.10.3.
SeverityHigh
CVSS7.2
Exploit probability—
ProductCommenthol Md-fileserver
PublishedJun 9, 2026
First seenJun 9, 2026
Weakness typeCWE-80CWE-80CWE-87CWE-87
How to fix
Update
- commenthol md-fileserver1.10.3 or later
- md-fileserver1.10.3 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| commenthol md-fileserver | v < 1.10.3 | 1.10.3 |
| md-fileservernpm | v < 1.10.3 | 1.10.3 |
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