CVE-2026-73565

A flaw was found in @hono/node-server. An unauthenticated attacker can exploit this vulnerability by sending a WebSocket upgrade request with a missing or malformed Sec-WebSocket-Key header. This action causes the server to retain request data, leading to unbounded memory growth and eventually a...

CVE-2026-73565

@hono/node-server allows running the Hono application on Node.js. From 2.0.0 until 2.0.10, a WebSocket upgrade request to an upgradeWebSocket route with a missing or malformed Sec-WebSocket-Key header causes src/websocket.ts to retain the request's IncomingMessage in waiterMap and leave...

CVE-2026-73565

CVE-2026-73565 affects @hono/node-server

CVE-2026-73565 @hono/node-server: Unauthenticated memory-leak DoS via aborted WebSocket handshake

@hono/node-server allows running the Hono application on Node.js. From 2.0.0 until 2.0.10, a WebSocket upgrade request to an upgradeWebSocket route with a missing or malformed Sec-WebSocket-Key header causes src/websocket.ts to retain the request's IncomingMessage in waiterMap and leave...

CVE-2026-73565 @hono/node-server: Unauthenticated memory-leak DoS via aborted WebSocket handshake

@hono/node-server allows running the Hono application on Node.js. From 2.0.0 until 2.0.10, a WebSocket upgrade request to an upgradeWebSocket route with a missing or malformed Sec-WebSocket-Key header causes src/websocket.ts to retain the request's IncomingMessage in waiterMap and leave...

CVE-2026-73423

Astro (web framework) vulnerability CVE-2026-73423 affects the composable astro/hono pipeline from versions 7.0.0–7.0.6. If actions() or pages() are mounted before middleware(), or if middleware() is omitted, security.checkOrigin is not enforced at dispatch sinks, allowing blind write‑only CSRF a...

CVE-2026-73423 Astro: composable `astro/hono` pipeline bypasses `security.checkOrigin` when `middleware()` is absent or misordered

Astro is a web framework for content-driven websites. From 7.0.0 until 7.0.6, the composable astro/hono pipeline installs security.checkOrigin only through the middleware primitive, while actions and pages can dispatch to user code independently. Mounting actions before middleware, as in the...

CVE-2025-71381

A flaw was found in Hono's Cross-Origin Resource Sharing CORS middleware. When the origin is not set to a wildcard, the middleware improperly copies the Vary header from incoming requests into the response. This allows an attacker to inject arbitrary Vary values, potentially leading to cache key...

CVE-2026-69207

Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.34, the built-in CORS middleware, hono/cors, is vulnerable to a regular expression denial of service ReDoS. During a preflight OPTIONS request, the middleware parses the attacker-controlled...

CVE-2026-69207 Hono: ReDoS in CORS middleware via Access-Control-Request-Headers

Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.34, the built-in CORS middleware, hono/cors, is vulnerable to a regular expression denial of service ReDoS. During a preflight OPTIONS request, the middleware parses the attacker-controlled...

CVE-2026-69207

Hono’s built-in CORS middleware (hono/cors) is vulnerable to a ReDoS in the Access-Control-Request-Headers parsing during preflight requests when allowHeaders is unset/empty. The regex-based parser can backtrack quadratically with long whitespace, potentially causing seconds of CPU usage per pref...

CVE-2026-71849

Hono is a Web application framework that provides support for any JavaScript runtime. From 4.7.0 to 4.12.33, the Proxy Helper proxy function in hono/proxy does not remove response headers named by the origin's Connection header. Per RFC 9110 Section 7.6.1, an intermediary must remove the header...

CVE-2026-71850

Hono is a Web application framework that provides support for any JavaScript runtime. From 3.8.0 to 4.12.33, memo from hono/jsx retains the result of a server side render and reuses it for later renders with comparator equal props, and request scoped values read inside the component take no part ...

CVE-2026-71848

Hono is a Web application framework that provides support for any JavaScript runtime. From 4.12.0 to 4.12.33, the languageDetector middleware is vulnerable to algorithmic complexity denial of service when processing a crafted language tag containing a large number of hyphen separated subtags. To...

GHSA-F23P-VX2J-J53R Hono: `memo()` retains SSR output across requests, leading to cross-user data disclosure

Summary memo from hono/jsx retains the result of a server-side render and reuses it for later renders with comparator-equal props. Request-scoped values read inside the component take no part in that comparison, so a response can contain HTML rendered for another user's request. Details Component...

Hono: `memo()` retains SSR output across requests, leading to cross-user data disclosure

Summary memo from hono/jsx retains the result of a server-side render and reuses it for later renders with comparator-equal props. Request-scoped values read inside the component take no part in that comparison, so a response can contain HTML rendered for another user's request. Details Component...

NPM: Hono: `memo()` retains SSR output across requests, leading to cross-user data disclosure

NPM: Hono: memo retains SSR output across requests, leading to cross-user data disclosure vulnerability discovered by ? in WordPress Npm hono versions = 3.8.0, 4.12.34...

CVE-2026-71850 Hono: `memo()` retains SSR output across requests, leading to cross-user data disclosure

Hono is a Web application framework that provides support for any JavaScript runtime. From 3.8.0 to 4.12.33, memo from hono/jsx retains the result of a server side render and reuses it for later renders with comparator equal props, and request scoped values read inside the component take no part ...

CVE-2026-71850

Hono CVE-2026-71850 affects the Hono Web framework (3.8.0–4.12.33). memo() retains SSR output for later renders and reuses it when controls with identical props are rendered, while request-scoped values read during rendering (e.g., JSX Context via createContext/useContext, useRequestContext from ...

CVE-2026-71850

Hono is a Web application framework that provides support for any JavaScript runtime. From 3.8.0 to 4.12.33, memo from hono/jsx retains the result of a server side render and reuses it for later renders with comparator equal props, and request scoped values read inside the component take no part ...