CVE-2026-118663

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

State
Published
Severity
5.3 Medium
Published
Oct 28, 2026
Updated
Oct 29, 2026
Reserved
Oct 28, 2026

Read the record on cve.org

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.

Scores

CVSSScoreVectorSource
3.15.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:NGitHub_M

Weaknesses

  • CWE-174 Double Decoding of the Same Data

Affected Products

ProductVersions
node-serverhonojs
  • > = 1.19.10, < 2.1.3Affected

References

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