CVE-2022-39288

Denial of service in Fastify via Content-Type header

HIGH
7.5
CVSS Score
Published: October 10, 2022 at 12:00 AM UTC
Updated: June 17, 2026 at 04:58 AM UTC
1 product affected across 1 vendorFastify

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Severity
HIGH7.5
Exploit prediction
EPSS 59%
SSVC
No known exploit

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 4.8.1
Affected range stops below 4.8.1, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGHGitHub_M
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-754

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