CVE-2026-29045
CVE-2026-29045 · Hono: Arbitrary file access via serveStatic vulnerability
This page contains facts from public vulnerability sources. Check the original advisory before updating.
Hono is a Web application framework that provides support for any JavaScript runtime. Prior to version 4.12.4, when using serveStatic together with route-based middleware protections (e.g. app.use('/admin/*', ...)), inconsistent URL decoding allowed protected static resources to be accessed without authorization. The router used decodeURI, while serveStatic used decodeURIComponent. This mismatch allowed paths containing encoded slashes (%2F) to bypass middleware protections while still resolving to the intended filesystem path. This issue has been patched in version 4.12.4.
CVSS 7.5 · High · EPSS 0.5% · Fix available
- Published
- Updated
Stack: node