USN-4022-1: Gunicorn vulnerability

19 June 2019

Gunicorn vulnerability

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 16.04 LTS


Gunicorn could allow cross-site scripting (XSS) attacks.

Software Description

  • gunicorn - Python HTTP/WSGI server


It was discovered that gunicorn improperly handled certain input. An attacker could potentially use this issue execute a cross-site scripting (XSS) attack.

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 16.04 LTS
gunicorn - 19.4.5-1ubuntu1.1
gunicorn3 - 19.4.5-1ubuntu1.1
python-gunicorn - 19.4.5-1ubuntu1.1
python3-gunicorn - 19.4.5-1ubuntu1.1

To update your system, please follow these instructions:

In general, a standard system update will make all the necessary changes.