CVE-2026-46492 HIGH

CVE-2026-46492: md-fileserver: Stored/Reflected XSS when viewing Markdown (raw HTML allowed)

Vendor Commenthol
Product md-fileserver
Weakness CWE-80 · XSS · basic
Published June 9, 2026
Last update June 9, 2026

CVSS base score

7.2/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality Low
Integrity Low

CVSS vector

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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

June 9, 2026 CVE published
June 9, 2026 Record updated

Related vulnerabilities

04Related CVE