Security Advisory 2023-02

Summary Zipbomb resource exhaustion in Octopus Server (CVE-2022-2883)
Advisory Number 2023-01
Discovery Date 05 Nov 2022
Patch Release Date 06 Feb 2023
Advisory Release Date 14 Feb 2023
Product Octopus Server
Operating System Linux and Microsoft Windows
Severity Medium
CVE ID CVE-2022-2883

Customers who have downloaded and installed any of the Octopus Server versions listed below ("Details") are affected.

Please upgrade your Octopus Server immediately to fix this vulnerability.

Customers who have upgraded Octopus Server to version 2022.4.8423 or higher are not affected.


Octopus Deploy has given this vulnerability a medium rating. This rating was given according to the Octopus Deploy severity levels, which ranks vulnerabilities as critical, high, medium, or low severity.

This is our assessment and you should evaluate its applicability to your own environment.


In affected versions of Octopus Deploy it is possible to upload a zipbomb file as a task which results in Denial of Service

The versions of Octopus Server affected by this vulnerability are:

  • All 0.x.x, 1.x.x, 2.x.x, 3.x.x, 4.x.x versions
  • All 2018.x.x, 2019.x.x, 2020.x.x, 2021.x.x versions
  • All 2022.1.x, 2022.2.x versions
  • All 2022.3.x versions before 2022.3.11043
  • All 2022.4.x versions before 2022.4.8401


To address this vulnerability, we have released Octopus Server version:

  • 2022.3.11043
  • 2022.4.8401

The latest versions of Octopus Deploy products can be downloaded from and previous versions can be downloaded from

What You Need to Do

Octopus Deploy recommends that you upgrade to the latest version (2022.4.8423). You can download the latest version of Octopus Server from

If you can't upgrade to the latest version (2022.4.8423):

If you have feature version... ...then upgrade to this version
0.x.x, 1.x.x, 2.x.x, 3.x.x, 4.x.x 2022.3.11043 or greater
2018.x, 2019.x, 2020.x, 2021.x 2022.3.11043 or greater
2022.1.x, 2022.2.x 2022.3.11043 or greater
2022.3.x 2022.3.11043 or greater
2022.4.x 2022.4.8401 or greater


There is no known mitigation for CVE-2022-2883, it is important to upgrade to a fixed version as soon as possible.


If you have any questions or concerns regarding this advisory, please contact our support team

Exploitation and Public Announcements

The Octopus Deploy security team is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.


This vulnerability was found by Bartłomiej Górkiewicz