Directory Traversal

Overview @fastify/reply-from is a forward your HTTP request to another server, for fastify Affected versions of this package are vulnerable to Directory Traversal via the reply.from function. An attacker can access unauthorized routes by crafting a malicious URL containing encoded directory...

EUVD-2025-200117

fastify-reply-from affected by bypass of reply forwarding...

GHSA-2Q7R-29RG-6M5H fastify-reply-from affected by bypass of reply forwarding

Summary By crafting a malicious URL, an attacker could access routes that are not allowed, even though the reply.from is defined for specific routes in @fastify/reply-from. Details An attacker can bypass the route defined by the @fastify/reply-from package by adding a .. symbol, which, for curl...

fastify-reply-from affected by bypass of reply forwarding

Summary By crafting a malicious URL, an attacker could access routes that are not allowed, even though the reply.from is defined for specific routes in @fastify/reply-from. Details An attacker can bypass the route defined by the @fastify/reply-from package by adding a .. symbol, which, for curl...

CVE-2025-66415

fastify-reply-from is a Fastify plugin to forward the current HTTP request to another server. Prior to 12.5.0, by crafting a malicious URL, an attacker could access routes that are not allowed, even though the reply.from is defined for specific routes in @fastify/reply-from. This vulnerability is...

CVE-2025-66415 fastify-reply-from bypass of reply forwarding

fastify-reply-from is a Fastify plugin to forward the current HTTP request to another server. Prior to 12.5.0, by crafting a malicious URL, an attacker could access routes that are not allowed, even though the reply.from is defined for specific routes in @fastify/reply-from. This vulnerability is...

CVE-2025-66415

CVE-2025-66415 affects the Fastify plugin @fastify/reply-from . Affected versions allow bypassing route restrictions by crafting a malicious URL, enabling access to routes that should be disallowed when using reply.from. The vulnerability is described across multiple sources as a bypass of reply ...

CVE-2025-66415 fastify-reply-from bypass of reply forwarding

fastify-reply-from is a Fastify plugin to forward the current HTTP request to another server. Prior to 12.5.0, by crafting a malicious URL, an attacker could access routes that are not allowed, even though the reply.from is defined for specific routes in @fastify/reply-from. This vulnerability is...

CVE-2025-66415 fastify-reply-from bypass of reply forwarding

fastify-reply-from is a Fastify plugin to forward the current HTTP request to another server. Prior to 12.5.0, by crafting a malicious URL, an attacker could access routes that are not allowed, even though the reply.from is defined for specific routes in @fastify/reply-from. This vulnerability is...

PT-2025-48579

Name of the Vulnerable Software and Affected Versions fastify-reply-from versions prior to 12.5.0 Description fastify-reply-from is a Fastify plugin used to forward HTTP requests to another server. Versions of the plugin prior to 12.5.0 contain a flaw where a malicious URL can be crafted to allow...

CVE-2023-51701

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...

Request Smuggling

fastify-reply-from is vulnerable to Request Smuggling. The vulnerability is due to the absence of a unified Content-Type parsing, unlike the majority of Fastify that uses fast-content-type-parse with trimming after split. This issue can be exploited by an attacker to bypass security checks,...

@fastify/reply-from JSON Content-Type parsing confusion

Impact The main repo of fastify use fast-content-type-parse to parse request Content-Type, which will trim after split. The fastify-reply-from have not use this repo to unify the parse of Content-Type, which won't trim. As a result, a reverse proxy server built with @fastify/reply-from could...

CVE-2023-51701 @fastify-reply-from JSON Content-Type parsing confusion

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...

CVE-2023-51701

CVE-2023-51701 affects fastify-reply-from, a Fastify plugin. The vulnerability arises when the plugin misinterprets the request body due to a Content-Type handling discrepancy (Content-Type header like application/json ; charset=utf-8), allowing bypass of security checks. References in multiple s...

CVE-2023-51701 @fastify-reply-from JSON Content-Type parsing confusion

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...

CVE-2023-51701 @fastify-reply-from JSON Content-Type parsing confusion

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...

Fastify Environmental Vulnerabilities

Fastify is an open source web framework for Node.js from the OpenJS Foundation. A security vulnerability exists in Fastify fastify-reply-from versions prior to 9.6.0, which stems from the fact that passing body text via header using fastify/reply-from may be misinterpreted, leading to bypassing...

Important: Red Hat Security Advisory: Red Hat Advanced Cluster Management 2.2.2 security and bug fix update

Red Hat Advanced Cluster Management for Kubernetes 2.2.2 General Availability release images, which fix several bugs and security issues. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a...

CVE-2021-21321

A flaw was found in fastify-reply-from. Escaping of the prefix of the proxied backend service is possible allowing an attacker, using a specially crafted URL, to gain access to directories that would otherwise be out of bounds. The highest threat from this vulnerability is to data confidentiality...