High 7.5Published Apr 8, 2026

CVE-2026-39408Hono is a Web application framework that provides support for any JavaScript runtime.

Updated under an hour ago (2026-10-19 07:10 UTC)

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Every CVE for hono

Exploited in the last 30 days

Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.12, a path traversal issue in toSSG() allows files to be written outside the configured output directory during static site generation. When using dynamic route parameters via ssgParams, specially crafted values can cause generated file paths to escape the intended output directory. This vulnerability is fixed in 4.12.12.

CVSS: 7.5 HIGH (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness (CWE): CWE-22
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Not given
NVD analysis: Analyzed
Record last updated: Jul 24, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

hono hono hono:hono	from 4.0.0 through 4.12.11	NVD

References

https://github.com/honojs/hono/commit/b470278920fffcfd6d76002755d6db53db827679patch
https://github.com/honojs/hono/releases/tag/v4.12.12release-notes
https://github.com/honojs/hono/security/advisories/GHSA-xf4j-xp2r-rqqxexploit, vendor-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.