CVE-2022-39386

HIGH

@fastify/websocket - DoS

Title source: llm
STIX 2.1

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.

Scores

CVSS v3 7.5
EPSS 0.0032
EPSS Percentile 54.8%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-248
Status published
Products (4)
fastify/websocket 5.0.0
fastify/websocket 5.0.0 - 5.0.1npm
fastify/websocket 6.0.0 - 7.1.1
npm/fastify-websocket 0npm
Published Nov 08, 2022
Tracked Since Feb 18, 2026