Ad

CVE-2026-39408

MEDIUM CVSS 4.0: 5.9 EPSS 0.01%
Updated Apr 10, 2026
Hono
Parameter Value
CVSS 5.9 (MEDIUM)
Fixed In 4.12.12
Type CWE-22 (Path Traversal)
Vendor Hono
Public PoC No

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.

Attack Parameters

Attack Vector
Local
Requires local access
Attack Complexity
High
Difficult to exploit
Attack Requirements
Present
Additional conditions required
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
None
No data leak
Integrity
High
Complete data modification
Availability
None
No disruption

CVSS Vector v4.0

Weakness Type (CWE)