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VulnerabilityPublished

CVE-2026-46492: commenthol md-fileserver · Basic XSS

Affects commenthol md-fileserverSource CVE Database V5

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Not known to be exploited · CVSS 7.2 High : upgrade to 1.10.3 soon.

Data as of 29 Oct 2026, 19:04 UTC

CVSS 3.1 base score
7.2High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.2% chance of exploitation in 30 days – higher than 14% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 1.10.3
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 9 Jun 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.

What to do

Upgrade md-fileserver and commenthol/md-fileserver to 1.10.3.

Affected software

ProductAffectedFixed in
commentholmd-fileserverAffected
  • <1.10.3
Fixed in
  • 1.10.3
GitHubcommenthol/md-fileserverpkg:github/commenthol/md-fileserverOther threatsAffected
  • <1.10.3
Fixed in
  • 1.10.3

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Upgrade md-fileserver to version 1.10.3 or later, where this XSS vulnerability has been patched. No other vendor advisories or temporary mitigations are provided. Patch status is confirmed by the vendor's versioning information.

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.

References

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