CVE-2026-92081: Uncaught Exception

fastify is a fast and low-overhead web framework for Node.js. In versions before 5.12.5, when a route registers a response trailer via reply.trailer and is served over HTTP/2, fastify unconditionally sets the Transfer-Encoding: chunked header, which is forbidden on HTTP/2, so Node.js throws while...

CVE-2026-92395: Authentication Bypass by Spoofing

@fastify/proxy-addr is a Fastify plugin that determines a request's client address behind trusted reverse proxies, and it backs Fastify request.ip and request.ips. In versions 3.0.0 through 5.1.0, a trust subnet written in IPv4-mapped IPv6 notation with an IPv4-sized prefix, such as...

Linux Distros Unpatched Vulnerability : CVE-2026-86818

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - fast-uri is a dependency-free RFC 3986 URI parser for Node.js, used by Fastify and ajv, that added a mailto scheme parser in version 4.1.3. In versions 4.1.3 an...

CLSA-2026-1789159896 TuxCare security update for fastify (2 CVEs)

TuxCare rebuilt fastify to address 2 CVEs. Fixed in 5.7.4-tuxcare.1...

CVE-2026-75021

fastify-cli starts the Node.js Inspector when a debug flag is used, but it ignores the explicit bind address the user supplies and binds the Inspector to a broadly reachable address instead of the intended loopback. As a result the debugging interface can be exposed beyond the local machine, and...

CVE-2026-75021 fastify-cli vulnerable to remote code execution via ignored explicit Inspector bind address

fastify-cli starts the Node.js Inspector when a debug flag is used, but it ignores the explicit bind address the user supplies and binds the Inspector to a broadly reachable address instead of the intended loopback. As a result the debugging interface can be exposed beyond the local machine, and...

CVE-2026-75021

fastify-cli (versions 1.5.0 through 8.0.1) starts the Node.js Inspector when a debug flag is used, but ignores the explicit bind address the user supplies, binding the Inspector to a broadly reachable address instead of the intended loopback. Because the Inspector protocol permits arbitrary code ...

CVE-2026-75021 fastify-cli vulnerable to remote code execution via ignored explicit Inspector bind address

fastify-cli starts the Node.js Inspector when a debug flag is used, but it ignores the explicit bind address the user supplies and binds the Inspector to a broadly reachable address instead of the intended loopback. As a result the debugging interface can be exposed beyond the local machine, and...

EUVD-2026-72734

fastify-cli starts the Node.js Inspector when a debug flag is used, but it ignores the explicit bind address the user supplies and binds the Inspector to a broadly reachable address instead of the intended loopback. As a result the debugging interface can be exposed beyond the local machine, and...

CVE-2026-75021 fastify-cli vulnerable to remote code execution via ignored explicit Inspector bind address

fastify-cli starts the Node.js Inspector when a debug flag is used, but it ignores the explicit bind address the user supplies and binds the Inspector to a broadly reachable address instead of the intended loopback. As a result the debugging interface can be exposed beyond the local machine, and...

PT-2026-87068

fastify-cli starts the Node.js Inspector when a debug flag is used, but it ignores the explicit bind address the user supplies and binds the Inspector to a broadly reachable address instead of the intended loopback. As a result the debugging interface can be exposed beyond the local machine, and...

CVE-2026-75021: Binding to an Unrestricted IP Address

fastify-cli starts the Node.js Inspector when a debug flag is used, but it ignores the explicit bind address the user supplies and binds the Inspector to a broadly reachable address instead of the intended loopback. As a result the debugging interface can be exposed beyond the local machine, and...

CVE-2026-18174

A flaw was found in @fastify/forwarded. This component, responsible for resolving client addresses from the X-Forwarded-For header, fails to strip horizontal tab characters when processing multiple comma-separated entries. A remote attacker could exploit this by injecting tab characters into the...

Authentication Bypass Using an Alternate Path or Channel

Overview fastify is an overhead web framework, for Node.js. Affected versions of this package are vulnerable to Authentication Bypass Using an Alternate Path or Channel via malformed URLs in the fourOhFour router in lib/four-oh-four.js. An attacker can reach an encapsulated not-found handler and...

03-api-solid (>=1.0.0, <=1.1.2), 0uth (>=1.0.5, <=1.2.1) +3014 more potentially affected by CVE-2026-76169 via fastify (>=4.0.2, <=5.12.1)

fastify NPM version =4.0.2, =1.0.0, =1.0.5, =1.0.3, =0.0.3, =0.1.0, =0.1.0, =0.0.1, =1.0.0, =3.0.0, =0.1.0, =2.0.0, =3.0.0, =0.0.1, =0.1.0, =0.1.0, =0.1.1 and more Source cves: CVE-2026-76169 Source advisory: SNYK:JS-FASTIFY-19639043...

CVE-2026-84428

fastify versions before 5.12.2 implement the case-insensitive nature of HTTP header names by lowercasing names in a route's header schema before compiling it, but the transformation is incomplete: it lowercases the properties keys and the root-level required array, and does not lowercase the...

CVE-2026-84428

A flaw was found in fastify. Due to incomplete case normalization of HTTP header names within a route's header schema, specifically within the JSON Schema Draft 7 dependencies keyword, an unauthenticated remote attacker can bypass intended conditional checks. This allows the attacker to send...

Interpretation Conflict

Overview @fastify/middie is a Middleware engine for Fastify Affected versions of this package are vulnerable to Interpretation Conflict via the request target evaluation. An attacker can gain unauthorized access to protected routes by crafting requests with absolute-form targets that bypass...

@arenahito/droid-webscr (>=0.2.1, <=0.6.0), @cappa/cli (>=0.4.4, <=0.12.0) +3 more potentially affected by CVE-2026-85184 via @fastify/middie (>=9.1.0, <=9.3.3)

@fastify/middie NPM version =9.1.0, =0.2.1, =0.4.4, =0.2.8, =1.0.0, =1.0.0-alpha.23, =1.0.0-alpha.29 Source cves: CVE-2026-85184 Source advisory: SNYK:JS-FASTIFYMIDDIE-19643570...

CVE-2026-84469

A flaw was found in fastify. An unauthenticated remote attacker can bypass request validation by exploiting how fastify processes boolean false schemas. When an application intends to deny all input by assigning 'false' to a route's schema, fastify incorrectly treats it as a missing schema and...