@hono/node-server: `serveStatic` decodes the request path a second time, leading to bypass of middleware on static paths

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-118663
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-28 21:16:56 UTC
Updated2026-10-28 21:16:56 UTC
Description@hono/node-server allows running the Hono application on Node.js. From 1.19.10 until 2.1.3, serveStatic decodes a request path a second time after Hono has already decoded it for routing, so a malformed percent-encoded sequence can make route middleware evaluate an encoded path while static file resolution uses a different directory. An unauthenticated attacker can bypass middleware mounted on a protected static prefix and read a file inside the configured static root, although the flaw does not permit traversal outside that root. This issue is fixed in version 2.1.3.

Risk And Classification

Primary CVSS: v3.1 5.3 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Problem Types: CWE-174 | CWE-174 CWE-174: Double Decoding of the Same Data

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary5.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
3.1CNADECLARED5.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Honojs Node-server affected > = 1.19.10, < 2.1.3 Not specified

References

ReferenceSourceLinkTags
github.com/honojs/node-server/releases/tag/v2.1.3 [email protected] github.com
github.com/honojs/node-server/security/advisories/GHSA-rmxm-3fg6-px4f [email protected] github.com
github.com/honojs/node-server/commit/982179278529d5673812116b042829f2779... [email protected] github.com
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