---
id: CVE-2019-11284
title: >-
  Pivotal Reactor Netty, versions prior to 0.8.11, passes headers through
  redirects, including authorization ones
summary: >-
  Pivotal Reactor Netty, versions prior to 0.8.11, passes headers through
  redirects, including authorization ones. A remote unauthenticated malicious
  user may gain access to credentials for a different server than they have
  access to.
severity: high
cvss: 8.6
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N'
cwe:
  - CWE-522
  - CWE-522
vendor: broadcom
product: reactor_netty
affected:
  - 'reactor_netty >= 0.8.0, < 0.8.11'
patched:
  - reactor_netty 0.8.11
published: '2019-10-17'
updated: '2026-09-04'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2019-11284'
references:
  - url: 'https://pivotal.io/security/cve-2019-11284'
    label: security@pivotal.io
  - url: 'https://pivotal.io/security/cve-2019-11284'
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
epss: 0.00894
epssPercentile: 0.57978
ingestedAt: '2026-09-04T19:26:35.122Z'
---

## Overview

Pivotal Reactor Netty, versions prior to 0.8.11, passes headers through redirects, including authorization ones. A remote unauthenticated malicious user may gain access to credentials for a different server than they have access to.

## Affected

- `reactor_netty >= 0.8.0, < 0.8.11`

## Remediation

Upgrade past the affected range:

- `reactor_netty 0.8.11`