CVE-2026-33131

H3 is a minimal HTTP framework. Versions 2.0.0-0 through 2.0.1-rc.14 contain a Host header spoofing vulnerability in the NodeRequestUrl which extends FastURL which allows middleware bypass. When event.url, event.url.hostname, or event.url.url is accessed, such as in a logging middleware, the url...

h3 has a middleware bypass with one gadget

H3 NodeRequestUrl bugs Vulnerable pieces of code : js import H3, serve, defineHandler, getQuery, getHeaders, readBody, defineNodeHandler from "h3"; let app = new H3 const internalOnly = defineHandlerevent, next = const token = event.headers.get"x-internal-key"; if token !==...

GHSA-3VJ8-JMXQ-CGJ5 h3 has a middleware bypass with one gadget

H3 NodeRequestUrl bugs Vulnerable pieces of code : js import H3, serve, defineHandler, getQuery, getHeaders, readBody, defineNodeHandler from "h3"; let app = new H3 const internalOnly = defineHandlerevent, next = const token = event.headers.get"x-internal-key"; if token !==...

PT-2026-26194

H3 NodeRequestUrl bugs Vulnerable pieces of code : js import H3, serve, defineHandler, getQuery, getHeaders, readBody, defineNodeHandler from "h3"; let app = new H3 const internalOnly = defineHandlerevent, next = const token = event.headers.get"x-internal-key"; if token !==...