CVE-2026-39406

Description

@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.

PUBLISHED Reserved 2026-04-07 | Published 2026-04-08 | Updated 2026-04-08 | Assigner GitHub_M

Problem types

CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Product status

References

github.com/...server/security/advisories/GHSA-92pp-h63x-v22m

cve.org (CVE-2026-39406)

nvd.nist.gov (CVE-2026-39406)

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