---
id: CVE-2023-34062
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, a malicious user can send a request using a specially
  crafted URL that can lead to a directory traversal attack.


  Specifically, an applicati…
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, a malicious user can send a request using a specially
  crafted URL that can lead to a directory traversal attack.


  Specifically, an applicati…
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'
cwe:
  - CWE-22
vendor: broadcom
product: reactor_netty
affected:
  - 'reactor_netty >= 1.0.0, < 1.0.39'
  - 'reactor_netty >= 1.1.0, < 1.1.13'
patched:
  - reactor_netty 1.1.13
published: '2023-11-15'
updated: '2026-09-04'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2023-34062'
references:
  - url: 'https://spring.io/security/cve-2023-34062'
    label: security@vmware.com
  - url: 'https://spring.io/security/cve-2023-34062'
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
epss: 0.01115
epssPercentile: 0.64578
ingestedAt: '2026-09-04T19:26:35.385Z'
---

## 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, a malicious user can send a request using a specially crafted URL that can lead to a directory traversal attack.

Specifically, an application is vulnerable if Reactor Netty HTTP Server is configured to serve static resources.




## Affected

- `reactor_netty >= 1.0.0, < 1.0.39`
- `reactor_netty >= 1.1.0, < 1.1.13`

## Remediation

Upgrade past the affected range:

- `reactor_netty 1.1.13`