XSS in Commenthol Md-Fileserver
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 <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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.003 (24.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 25th percentile — 24.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001
Affected products
- Commenthol Md-Fileserver — versions < 1.10.3
Weakness classification (CWE)
References
- github.com/commenthol/md-fileserver/releases/tag/v1.10.3 (Release Notes)
- github.com/commenthol/md-fileserver/security/advisories/GHSA-32q2-hhr5-6qvv (Exploit, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-46492?
- CVE-2026-46492 is a high-severity vulnerability in Commenthol Md-Fileserver, classified under Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS). CVSS score: 7.2/10. Published 2026-06-09.
- How severe is CVE-2026-46492?
- High severity. CVSS v3 base score is 7.2 out of 10.