CVE-2026-39407

Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.12, 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 4.12.12.

CVSS v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/honojs/hono/commit/9aff14bd727f8b0435c963363fd803260e7b8e3c	Patch
https://github.com/honojs/hono/releases/tag/v4.12.12	Release Notes
https://github.com/honojs/hono/security/advisories/GHSA-wmmm-f939-6g9c	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:hono:hono:*:*:*:*:*:node.js:*:*

History

No history.

Information

Published : 2026-04-08 15:16

Updated : 2026-07-24 21:10

NVD link : CVE-2026-39407

Mitre link : CVE-2026-39407

CVE.ORG link : CVE-2026-39407

JSON object : View

Products Affected

hono

hono

CWE

CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

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