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VULNERABILITIES

CVE-2026-39408 Details

Description

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CNA: CISA-ADPCVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://github.com/honojs/hono/commit/b470278920fffcfd6d76002755d6db53db827679 [email protected]Patch
https://github.com/honojs/hono/releases/tag/v4.12.12 [email protected]Release Notes
https://github.com/honojs/hono/security/advisories/GHSA-xf4j-xp2r-rqqx [email protected]ExploitVendor Advisory

Weakness Enumeration

CWE-IDCWE NameSource
CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')[email protected]

Affected Products

ProductVersions
hono hono
>= 4.0.0, <= 4.12.11

CPE

  • cpe:2.3:a:hono:hono:*:*:*:*:*:node.js:*:*

Remediation

  • No remediation found in references.

Change History

6 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-39408
NVD Published Date:
Apr 8, 2026
NVD Last Modified:
Jul 24, 2026
Source:
[email protected]
CVE-2026-39408 Details - Not Deferred