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High · 7.5 CVE-2022-39386 EUVD-2022-7228GHSA-4pcg-wr6c-h9cq

fastify-websocket vulnerable to uncaught exception via crash on malformed packet

Published Nov 8, 2022 · Updated Apr 23, 2025 · Assigned by GitHub_M

Description

@fastify/websocket provides WebSocket support for Fastify. Any application using @fastify/websocket could crash if a specific, malformed packet is sent. All versions of fastify-websocket are also impacted. That module is deprecated, so it will not be patched. This has been patched in version 7.1.1 (fastify v4) and version 5.0.1 (fastify v3). There are currently no known workarounds. However, it should be possible to attach the error handler manually. The recommended path is upgrading to the patched versions.

Affected products

VendorProductAffectedFixed
fastify fastify-websocket >= 5.0.0, < 5.0.1, >= 6.0.0, < 7.1.1, <= 4.3.0 —

Affected packages

EcosystemPackageAffectedFixedRecord
npm @fastify/websocket >= 5.0.0, < 5.0.1 5.0.1 GHSA-4pcg-wr6c-h9cq
npm @fastify/websocket >= 6.0.0, < 7.1.1 7.1.1 GHSA-4pcg-wr6c-h9cq
npm fastify-websocket <= 4.3.0 — GHSA-4pcg-wr6c-h9cq

References