CVE-2026-39406: medium-severity vulnerability in honojs node-server
@hono/node-server has a middleware bypass via repeated slashes in serveStatic
Published
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13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 5.3epss 0.4%
@hono/node-server allows running the Hono application on Node.js. Prior to 1.19.13, 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 1.19.13.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Affected products
honojs · node-serverRelated CVEs — honojs node-server
In the same product, most dangerous first.
CVE-2024-32652HIGH@hono/node-server contains Denial of Service risk when receiving Host header that cannot be parsedEPSS 0.9%CVE-2024-23340MEDIUM@hono/node-server can't handle "double dots" in URLEPSS 0.7%CVE-2026-73565MEDIUM@hono/node-server: Unauthenticated memory-leak DoS via aborted WebSocket handshakeEPSS 0.5%CVE-2026-29087HIGH@hono/node-server: Authorization bypass for protected static paths via encoded slashes in Serve Static MiddlewareEPSS 0.4%CVE-2026-118663MEDIUM@hono/node-server: `serveStatic` decodes the request path a second time, leading to bypass of middleware on static pathsEPSS 0.4%