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

7.2HIGH

Key Information:

Vendor

Commenthol

Status
Md-fileserver
Vendor
CVE Published:
9 June 2026

What is CVE-2026-46492?

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 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.

Affected Version(s)

md-fileserver < 1.10.3

References

https://github.com/commenthol/md-fileserver/security/advi...
x_refsource_CONFIRM
https://github.com/commenthol/md-fileserver/releases/tag/...
x_refsource_MISC

CVSS V3.1

Score:
7.2
Severity:
HIGH
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.