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Fastify

3 CVEs product

Monthly

CVE-2026-3419 npm MEDIUM PATCH This Month

Fastify improperly validates Content-Type headers by accepting RFC 9110-violating malformed values with trailing characters, allowing attackers to bypass content-type restrictions and route requests to unintended parsers. When regex-based content-type parsing is enabled, requests with invalid Content-Type headers such as "application/json garbage" are processed normally instead of being rejected, potentially enabling request misrouting and manipulation of parser behavior. No patch is currently available for this medium-severity vulnerability affecting Fastify applications.

Authentication Bypass Fastify Red Hat
NVD GitHub VulDB
CVSS 3.1
5.3
EPSS
0.0%
CVE-2026-25223 npm HIGH PATCH This Week

Fastify versions before 5.7.2 allow attackers to bypass request body validation by injecting a tab character into the Content-Type header, enabling malicious payloads to reach application logic without validation checks. This remote attack requires no authentication and affects Node.js applications using vulnerable Fastify versions. A patch is available in version 5.7.2 and later.

Node.js Fastify Red Hat
NVD GitHub
CVSS 3.1
7.5
EPSS
0.0%
CVE-2025-32442 npm HIGH POC PATCH This Week

Fastify is a fast and low overhead web framework, for Node.js. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.

Authentication Bypass Node.js Fastify Red Hat
NVD GitHub
CVSS 3.1
7.5
EPSS
0.5%
EPSS 0% CVSS 5.3
MEDIUM PATCH This Month

Fastify improperly validates Content-Type headers by accepting RFC 9110-violating malformed values with trailing characters, allowing attackers to bypass content-type restrictions and route requests to unintended parsers. When regex-based content-type parsing is enabled, requests with invalid Content-Type headers such as "application/json garbage" are processed normally instead of being rejected, potentially enabling request misrouting and manipulation of parser behavior. No patch is currently available for this medium-severity vulnerability affecting Fastify applications.

Authentication Bypass Fastify Red Hat
NVD GitHub VulDB
EPSS 0% CVSS 7.5
HIGH PATCH This Week

Fastify versions before 5.7.2 allow attackers to bypass request body validation by injecting a tab character into the Content-Type header, enabling malicious payloads to reach application logic without validation checks. This remote attack requires no authentication and affects Node.js applications using vulnerable Fastify versions. A patch is available in version 5.7.2 and later.

Node.js Fastify Red Hat
NVD GitHub
EPSS 0% CVSS 7.5
HIGH POC PATCH This Week

Fastify is a fast and low overhead web framework, for Node.js. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.

Authentication Bypass Node.js Fastify +1
NVD GitHub

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