CVE-2026-25224

LOW

3.7

Description

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 reply.send() are impacted. A slow or non-reading client can trigger unbounded buffering when backpressure is ignored, leading to process crashes or severe degradation. This issue has been patched in version 5.7.3.

CVE Details

CVSS v3.1 Score3.7

SeverityLOW

CVSS VectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

Attack VectorNETWORK

ComplexityHIGH

Privileges RequiredNONE

User InteractionNONE

Published2/3/2026

Last Modified2/10/2026

Sourcenvd

Honeypot Sightings0

Affected Products

fastify:fastify

Weaknesses (CWE)

CWE-770

References

https://github.com/fastify/fastify/commit/eb11156396f6a5fedaceed0140aed2b7f026be37(security-advisories@github.com)

https://github.com/fastify/fastify/security/advisories/GHSA-mrq3-vjjr-p77c(security-advisories@github.com)

https://hackerone.com/reports/3524779(security-advisories@github.com)

IOC Correlations

No correlations recorded

This product uses data from the NVD API but is not endorsed or certified by the NVD.