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.
References (3)
Core 3
Core References
X_Refsource_Confirm x_refsource_confirm
https://github.com/honojs/hono/security/advisories/GHSA-wmmm-f939-6g9c
X_Refsource_Misc x_refsource_misc
https://github.com/honojs/hono/commit/9aff14bd727f8b0435c963363fd803260e7b8e3c
X_Refsource_Misc x_refsource_misc
https://github.com/honojs/hono/releases/tag/v4.12.12
Scores
CVSS v3
5.3
EPSS
0.0046
EPSS Percentile
36.2%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-22
Status
published
Products (3)
hono/hono
< 4.12.11
honojs/hono
< 4.12.12
npm/hono
0 - 4.12.12npm
Published
Apr 08, 2026
Tracked Since
Apr 08, 2026