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    CVE-2022-39288

    fastify is a fast and low overhead web framework, for Node.js. Affected versions of fastify are subject to a denial of service via malicious use of the Content-Type header. An attacker can send an invalid Content-Type header that can cause the application to crash. This issue has been addressed in commit `fbb07e8d` and will be included in release version 4.8.1. Users are advised to upgrade. Users unable to upgrade may manually filter out http content with malicious Content-Type headers.

    Published:Oct 10, 2022
    Last Modified:Apr 23, 2025
    EPS:Oct 10, 2022
    EPSS Score:0.09116
    CVSS Score:7.5

    Affected Products

    Vendor
    Fastify
    Product
    Fastify

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2026-84428 (CVSS 7.5) — fastify versions before 5.12.2 implement the case-insensitive nature of HTTP header names by lowercasing names…
    CVE-2026-84469 (CVSS 7.5) — fastify versions before 5.12.2 decide whether to compile a request schema based on JavaScript truthiness, but …
    CVE-2026-76169 (CVSS 7.5) — fastify versions >= 4.0.0 and before 5.12.2 can route a malformed URL sent under one plugin prefix to the cust…
    CVE-2026-84504 (CVSS 8.1) — fastify versions before 5.12.2 treat the object resolved by a successful Ajv async validator as the value resu…
    CVE-2026-16732 (CVSS 6.1) — fastify is a fast and low overhead web framework for Node.js. Impact: the fix for CVE-2026-3635 added a guard …
    CVE-2026-18504 (CVSS 5.4) — fastify is a fast and low overhead web framework for Node.js. Versions of fastify before 5.12.1 are affected b…
    CVE-2026-33806 (CVSS 7.5) — Impact: Fastify applications using schema.body.content for per-content-type body validation can have validati…
    CVE-2026-3635 (CVSS 6.1) — Summary When trustProxy is configured with a restrictive trust function (e.g., a specific IP like trustProxy: …
    CVE-2026-3419 (CVSS 5.3) — Fastify incorrectly accepts malformed `Content-Type` headers containing trailing characters after the subtype …
    CVE-2026-25223 (CVSS 7.5) — Fastify is a fast and low overhead web framework, for Node.js. Prior to version 5.7.2, a validation bypass vul…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High