CVE-2026-39408
Hono has a path traversal in toSSG() allows writing files outside the output directory
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
4th
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.
| CWE | CWE-22 |
| Vendor | honojs |
| Product | hono |
| Published | Apr 8, 2026 |
| Last Updated | Apr 10, 2026 |
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Affected Versions
honojs / hono
< 4.12.12