Security Advisory 2023-12

Summary OpenID client secret logged in plain text during configuration (CVE-2023-1904)
Advisory Number 2023-12
Discovery Date 06 APR 2023
Patch Release Date 21 JUL 2023
Advisory Release Date 12 DEC 2023
Product Octopus Server
Operating System Linux and Microsoft Windows
Severity Medium
CVE ID CVE-2023-1904

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 2023.3.5049 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 Server it is possible for the OpenID client secret to be logged in clear text during the configuration of Octopus Server.

The versions of Octopus Server affected by this vulnerability are:

  • All 2022.2.x, 2022.3.x, 2022.4.x versions
  • All 2023.1.x versions before 2023.1.11942
  • All 2023.2.x versions before 2023.2.13151
  • All 2023.3.x versions before 2023.3.5049


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

  • 2023.1.11942
  • 2023.2.13151
  • 2023.3.5049

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 (2023.4.8116 at the time of writing). You can download the latest version of Octopus Server from

We recommend rotating your Octopus Server's OpenID client secret - especially if it appears in your logs. For more information please see our documentation at, or contact our support team by accessing the link below.

If you can't upgrade to the latest version (2023.4.8116):

If you have feature version... ...then upgrade to this version
2022.2.x, 2022.3.x, 2022.4.x 2023.1.11942 or greater
2023.1.x 2023.1.11942 or greater
2023.2.x 2023.2.13151 or greater
2023.3.x 2023.3.5049 or greater


There is no known mitigation for CVE-2023-1904, 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 during internal testing by Yun Huang Yong at Octopus Deploy.