Vulnerability · Published Oct 28, 2026 · Assigned by GitHub_M
CVE-2026-118663@hono/node-server: `serveStatic` decodes the request path a second time, leading to bypass of middleware on static paths
Medium 5.3
In plain English
A medium-severity security flaw in node-server from honojs. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 29% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| npm | @hono/node-server | 2.1.3 | GHSA-rmxm-3fg6-px4f |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| honojs | node-server | > = 1.19.10, < 2.1.3 |
Weakness: CWE-174 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N