CVE-2026-118663
MEDIUMDescription
@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.
How to fix
TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works
Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.
CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Exploit Intelligence
Low risk: more likely to be exploited than 29% of all known CVEs.
References
Related Vulnerabilities
Other CWE-174 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2026-109955 | Medium | 5.3 | 0.3% | - | Fix |
| CVE-2026-111757 | Medium | 5.3 | 0.3% | - | Fix |
| CVE-2026-118655 | Medium | 5.9 | 0.3% | - | - |
| CVE-2026-93903 | Critical | 9.4 | 0.3% | - | - |
| CVE-2026-92839 | Medium | 4.3 | 0.3% | - | - |
| CVE-2026-75899 | High | 7.5 | 0.2% | - | Fix |
Common questions
How do I fix CVE-2026-118663?
Upgrade @hono/node-server to 2.1.3 or later.
Is CVE-2026-118663 being actively exploited?
Not that we know of. CVE-2026-118663 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.35% is the estimated probability that it will be exploited in the next 30 days. That is higher than 29% of all scored CVEs.
How severe is CVE-2026-118663?
CVE-2026-118663 has a CVSS v3 base score of 5.3, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
What does CVE-2026-118663 affect?
Published advisories record a fix for @hono/node-server (npm). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-10-29.