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Medium severity5.3NVD Advisory· Published Apr 8, 2026· Updated Apr 21, 2026

CVE-2026-39407

CVE-2026-39407

Description

Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.12, a path handling inconsistency in serveStatic allows protected static files to be accessed by using repeated slashes (//) in the request path. When route-based middleware (e.g., /admin/*) is used for authorization, the router may not match paths containing repeated slashes, while serveStatic resolves them as normalized paths. This can lead to a middleware bypass. This vulnerability is fixed in 4.12.12.

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Affected packages

Versions sourced from the GitHub Security Advisory.

PackageAffected versionsPatched versions
hononpm
< 4.12.124.12.12

Affected products

23

Patches

Vulnerability mechanics

References

5

News mentions

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