---
id: CVE-2023-34054
title: >-

  In Reactor Netty HTTP Server, versions 1.1.x prior to 1.1.13 and versions
  1.0.x prior to 1.0.39, it is possible for a user to provide specially crafted
  HTTP requests that may cause a denial-of-service (DoS) condition.


  Specifically, an …
summary: >-

  In Reactor Netty HTTP Server, versions 1.1.x prior to 1.1.13 and versions
  1.0.x prior to 1.0.39, it is possible for a user to provide specially crafted
  HTTP requests that may cause a denial-of-service (DoS) condition.


  Specifically, an …
severity: medium
cvss: 5.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L'
vendor: broadcom
product: reactor_netty
affected:
  - reactor_netty < 1.0.39
  - 'reactor_netty >= 1.1.0, < 1.1.13'
patched:
  - reactor_netty 1.1.13
published: '2023-11-28'
updated: '2026-09-04'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2023-34054'
references:
  - url: 'https://spring.io/security/cve-2023-34054'
    label: security@vmware.com
  - url: 'https://spring.io/security/cve-2023-34054'
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
epss: 0.00914
epssPercentile: 0.58432
ingestedAt: '2026-09-04T19:26:35.430Z'
---

## Overview


In Reactor Netty HTTP Server, versions 1.1.x prior to 1.1.13 and versions 1.0.x prior to 1.0.39, it is possible for a user to provide specially crafted HTTP requests that may cause a denial-of-service (DoS) condition.

Specifically, an application is vulnerable if Reactor Netty HTTP Server built-in integration with Micrometer is enabled.






## Affected

- `reactor_netty < 1.0.39`
- `reactor_netty >= 1.1.0, < 1.1.13`

## Remediation

Upgrade past the affected range:

- `reactor_netty 1.1.13`