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CVE-2026-39406GHSA-92PP-H63X-V22M

@hono/node-server has a middleware bypass via repeated slashes in serveStatic

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 1.19.13
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: yes
  • Technical impact: partial

Summary

@hono/node-server allows running the Hono application on Node.js. Prior to 1.19.13, a path handling inconsistency in serveStatic allows protected static files to be accessed by using repeated slashes (//) in the request path. When route-based middleware (e.g., /admin/*) is used for authorization, the router may not match paths containing repeated slashes, while serveStatic resolves them as normalized paths. This can lead to a middleware bypass. This vulnerability is fixed in 1.19.13.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: yes · Technical impact: partial

  3. Record last updated

Affected versions

  • honojs node-server

    fixed in 1.19.13

  • @hono/node-servernpm

    fixed in 1.19.13

References 1

GitHub · honojs/node-server