CVE-2023-51701

HighCVSS 7.5/10Last modified Jun 17, 2026

Description

fastify-reply-from is a Fastify plugin to forward the current HTTP request to another server. A reverse proxy server built with `@fastify/reply-from` could misinterpret the incoming body by passing an header `ContentType: application/json ; charset=utf-8`. This can lead to bypass of security checks. This vulnerability has been patched in '@fastify/reply-from` version 9.6.0.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Weakness enumeration

CWE-444

Affected software

Vendor	Product	Versions
fastify	fastify-reply-from	< 9.6.0

References

https://github.com/fastify/fastify-reply-from/releases/tag/v9.6.0Release Notes
https://github.com/fastify/fastify-reply-from/security/advisories/GHSA-v2v2-hph8-q5xpVendor Advisory
https://github.com/fastify/fastify-reply-from/releases/tag/v9.6.0Release Notes
https://github.com/fastify/fastify-reply-from/security/advisories/GHSA-v2v2-hph8-q5xpVendor Advisory

Timeline

Published: Jan 8, 2024
Last modified: Jun 17, 2026
NVD status: Modified

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