Categories
CVE-2026-29087

@hono/node-server: Authorization bypass for protected static paths via encoded slashes in Serve Static Middleware

Summary

@hono/node-server: Authorization bypass for protected static paths via encoded slashes in Serve Static Middleware

Original description

The description as published by the source.

@hono/node-server allows running the Hono application on Node.js. Prior to version 1.19.10, when using @hono/node-server's static file serving together with route-based middleware protections (e.g. protecting /admin/*), inconsistent URL decoding can allow protected static resources to be accessed without authorization. In particular, paths containing encoded slashes (%2F) may be evaluated differently by routing/middleware matching versus static file path resolution, enabling a bypass where middleware does not run but the static file is still served. This issue has been patched in version 1.19.10.

Source: OSV.dev (Open Source Vulnerabilities) NVD GitHub Advisory OSV

References

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