CVE-2026-46492
HIGHmd-fileserver: Stored/Reflected XSS when viewing Markdown (raw HTML allowed)
Title source: cnaDescription
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.
References (2)
Core 2
Core References
X_Refsource_Confirm x_refsource_confirm
https://github.com/commenthol/md-fileserver/security/advisories/GHSA-32q2-hhr5-6qvv
X_Refsource_Misc x_refsource_misc
https://github.com/commenthol/md-fileserver/releases/tag/v1.10.3
Scores
CVSS v3
7.2
EPSS
0.0021
EPSS Percentile
11.5%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-80
CWE-87
Status
published
Products (2)
commenthol/md-fileserver
< 1.10.3
npm/md-fileserver
0 - 1.10.3npm
Published
Jun 09, 2026
Tracked Since
Jun 09, 2026