Affected versions of `fastify` are vulnerable to a denial of service when processing a request with `Content-Type` set to `application/json` and a very large payload.

## Recommendation

Update to version 0.38.0 or later.

Affected Packages

npm fastify

Affected versions: 0 (fixed in 0.38.0)

Related CVEs

CVE-2018-3711

Key Information

GHSA ID

GHSA-mq6c-fh97-4gwv

Published

July 18, 2018 9:20 PM

Last Modified

March 1, 2023 1:17 AM

CVSS Score

7.5 /10

Primary Ecosystem

npm

Primary Package

fastify

GitHub Reviewed

✓ Yes

Dataset

Last updated: August 31, 2025 6:33 AM

Data from GitHub Advisory Database. This information is provided for research and educational purposes.