---
id: CVE-2026-19481
title: >-
  fastify/busboy: fastify/busboy: Denial of Service from crafted form-data
  headers (CVE-2026-19481)
summary: >-
  A flaw was found in @fastify/busboy, a multipart form-data parser. A remote
  attacker can exploit this vulnerability by sending specially crafted multipart
  form-data headers. This can cause a TypeError in the parser, leading to the
  terminat…
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
cvssSource: vendor
cwe:
  - CWE-915
  - CWE-754
vendor: Red Hat
product: Red Hat OpenShift AI 3.4
affected:
  - openshift_pipelines
  - ceph_storage 8
  - ceph_storage 9
  - openshift_ai 3.4
patched:
  - openshift_ai 3.4
published: '2026-08-13'
updated: '2026-10-19'
sourceUpdated: '2026-10-19T11:10:20+00:00'
source: CSAF
sourceUrl: 'https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-19481.json'
references:
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-19481.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-19481'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2515192'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-19481'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-19481'
  - url: 'https://cna.openjsf.org/security-advisories.html'
  - url: 'https://github.com/fastify/busboy/security/advisories/GHSA-x8mw-p69m-v3mx'
  - url: 'https://access.redhat.com/errata/RHSA-2026:84734'
  - url: >-
      https://github.com/fastify/busboy/commit/957a24b66d5915e6d0a6ac988c9dbcee86373e9b
  - url: 'https://github.com/fastify/busboy/releases/tag/v3.2.1'
  - url: 'https://github.com/advisories/GHSA-x8mw-p69m-v3mx'
tags:
  - csaf
  - vex
  - red-hat
  - ghsa
  - npm
epss: 0.00493
epssPercentile: 0.42159
aliases:
  - GHSA-x8mw-p69m-v3mx
ecosystem: npm
ingestedAt: '2026-10-02T23:34:57.391Z'
---

## Overview

A flaw was found in @fastify/busboy, a multipart form-data parser. A remote attacker can exploit this vulnerability by sending specially crafted multipart form-data headers. This can cause a TypeError in the parser, leading to the termination of the Node.js process and resulting in an unauthenticated Denial of Service (DoS).

## Vendor advisories

- **RHSA-2026:84734** · Red Hat · fixed in: Red Hat OpenShift AI 3.4 · released 2026-10-19 · [advisory](https://access.redhat.com/errata/RHSA-2026:84734)
- **Red Hat VEX** · Important · affected: OpenShift Pipelines, Red Hat Ceph Storage 8, Red Hat Ceph Storage 9 · no fix planned: Red Hat Ceph Storage 8, Red Hat Ceph Storage 9, OpenShift Pipelines · updated 2026-10-19 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-19481.json)

**fastify/busboy: fastify/busboy: Denial of Service from crafted form-data headers** — rated Important by Red Hat. Released 2026-08-13, updated 2026-10-19.

Affected:

- OpenShift Pipelines
- Red Hat Ceph Storage 8
- Red Hat Ceph Storage 9

Fixed:

- Red Hat OpenShift AI 3.4

No fix planned:

- Red Hat Ceph Storage 8
- Red Hat Ceph Storage 9
- OpenShift Pipelines

Not affected:

- Red Hat OpenShift AI 3.4
- Red Hat AMQ Broker 7
- Red Hat OpenShift Container Platform 4

## Remediation

For Red Hat OpenShift AI 3.4.5 see the following documentation, which will be updated shortly for this release, for important instructions on how to upgrade your cluster and fully apply this errata update:

https://docs.redhat.com/en/documentation/red_hat_openshift_ai/ https://access.redhat.com/errata/RHSA-2026:84734

Workarounds / mitigations:

- Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.

## Package advisory (CVE-2026-19481)

Affected packages:

- `@fastify/busboy >= 1.0.0, < 3.2.1`

Patched in:

- `@fastify/busboy 3.2.1`

Source: https://github.com/advisories/GHSA-x8mw-p69m-v3mx