Security Advisory 2024-03

Summary Users with no permissions can see all users
Advisory Number 2024-03
Discovery Date 27 Jan 2024
Patch Release Date 21 Aug 2022
Advisory Release Date 30 Apr 2024
Product Octopus Server
Operating System Linux and Microsoft Windows
Severity Low
CVE ID CVE-2024-4226

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 2024.1.12600 or higher are not affected.


Octopus Deploy has given this vulnerability a Low 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.


It was identified that in certain versions of Octopus Server, that a user created with no permissions could view all users, user roles and permissions. This functionality was removed in versions of Octopus Server after the fixed versions listed.

The versions of Octopus Server affected by this vulnerability are:

  • All 2022.2.x versions before 2022.2.7934
  • All 2022.3.x versions before 2022.3.9163


To address this vulnerability, we have released Octopus Server version that contain the fix for this issue:

  • 2022.2.7934
  • 2022.3.9163

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 (2024.1.12600). You can download the latest version of Octopus Server from

If you can't upgrade to the latest version (2024.):

If you have feature version... ...then upgrade to this version
2022.2.x 2024.1.12600 or greater
2022.3.x 2024.1.12600 or greater


There is no known mitigation for CVE-2024-4226, 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 Kyle Jackson