CVE-2026-25224

Fastify is a fast and low overhead web framework, for Node.js. Prior to version 5.7.3, a denial-of-service vulnerability in Fastify’s Web Streams response handling can allow a remote client to exhaust server memory. Applications that return a ReadableStream or Response with a Web Stream body via...

CVE-2026-25224 Fastify Vulnerable to DoS via Unbounded Memory Allocation in sendWebStream

Fastify is a fast and low overhead web framework, for Node.js. Prior to version 5.7.3, a denial-of-service vulnerability in Fastify’s Web Streams response handling can allow a remote client to exhaust server memory. Applications that return a ReadableStream or Response with a Web Stream body via...

CVE-2026-25224

CVE-2026-25224 affects Fastify (Node.js). Before 5.7.3, a DoS can occur when a remote client sends a slow or non-reading request while the app returns a ReadableStream (or Web Stream) via reply.send(), causing unbounded buffering and possible memory exhaustion. Impact: server degradation or crash...

EUVD-2026-5158

Fastify is a fast and low overhead web framework, for Node.js. Prior to version 5.7.3, a denial-of-service vulnerability in Fastify’s Web Streams response handling can allow a remote client to exhaust server memory. Applications that return a ReadableStream or Response with a Web Stream body via...

Fastify Vulnerable to DoS via Unbounded Memory Allocation in sendWebStream

Impact A Denial of Service vulnerability in Fastify’s Web Streams response handling can allow a remote client to exhaust server memory. Applications that return a ReadableStream or Response with a Web Stream body via reply.send are impacted. A slow or non-reading client can trigger unbounded...