Security Advisory 2024-04

Summary Stored XSS in Audit Page
Advisory Number 2024-04
Discovery Date 09 FEB 2024
Patch Release Date 16 FEB 2024
Advisory Release Date 07 MAY 2024
Product Octopus Server
Operating System Linux and Microsoft Windows
Severity Medium
CVE ID CVE-2024-4456

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 2024.1.11127 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 with certain access levels it was possible to embed a Cross-Site Scripting payload on the audit page.

The versions of Octopus Server affected by this vulnerability are:

  • All 3.x.x, 4.x.x versions
  • All 2018.x.x, 2019.x.x, 2020.x.x, 2021.x.x, 2022.x.x versions
  • All 2023.1.x, 2023.2.x, 2023.3.x versions
  • All 2023.4.x versions before 2023.4.8432
  • All 2024.1.x versions before 2024.1.12087


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

  • 2023.4.8338
  • 2024.1.11127

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 (2024.1.12600):

If you have feature version... ...then upgrade to this version
3.x.x, 4.x.x 2024.1.11127 or greater
2018.x, 2019.x, 2020.x, 2021.x, 2022.x 2024.1.11127 or greater
2023.1.x, 2023.2.x, 2023.3.x 2024.1.11127 or greater
2023.4.x 2023.4.8338 or greater
2024.1.x 2024.1.11127 or greater


There is no known mitigation for CVE-2024-4456, 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