Vulnerability 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.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://github.com/honojs/node-server/commit/982179278529d5673812116b042829f2779
- https://github.com/honojs/node-server/releases/tag/v2.1.3
- https://github.com/honojs/node-server/security/advisories/GHSA-rmxm-3fg6-px4f
FAQ
What is CVE-2026-118663?
CVE-2026-118663 is a vulnerability with a CVSS score of 5.3 (MEDIUM). @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 malform...
How severe is CVE-2026-118663?
CVE-2026-118663 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-118663?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.