2021-03 - Cleartext Storage of Sensitive Information (CVE-2021-30183)

Advisory Number


Discovery Date

Patch Release Date

Advisory Release Date


Octopus Server

Operating System







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 using Octopus Cloud are not affected.

Customers who have upgraded Octopus Server to version 2021.1.6959 or higher are not affected.


Octopus Deploy has given this vulnerability a Medium rating. This rating was given according to the Octopus Deploy security 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.


When running migrator in Octopus Server, in certain situations when running import or export processes the password used to encrypt and decrypt sensitive values would be written to the logs in plaintext.

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, 2020.1.x, 2020.2.x, 2020.3.x, 2020.4.x versions

  • All 2020.5.x versions before 2020.5.329

  • All 2020.6.x versions before 2020.6.4847

  • All 2021.1.x versions before 2021.1.6959

This issue can be tracked here:


To address this vulnerability, we have released Octopus Server versions which contain a fix for this vulnerability:

  • 2020.5.329

  • 2020.6.4847

  • 2021.1.6959

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 (2021.1.6959). You can download the latest version of Octopus Server from

If you can’t upgrade to the latest version (2021.1.6959):

If you have feature version…

…then upgrade to this version

2018.x.x, 2019.x.x, 2020.1.x, 2020.2.x, 2020.3.x, 2020.4.x

2020.5.329 or greater


2020.5.329 or greater


2020.6.4847 or greater


There are no known mitigations for CVE-2021-30183, 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 Octopus Deploy Engineering.

Revision History

Version Date Comment
Current Version (v. 9) Jul 07, 2021 00:26 @a user
v. 8 May 14, 2021 04:22 @a user
v. 7 May 12, 2021 00:35 @a user
v. 6 May 11, 2021 23:42 @a user
v. 5 Apr 20, 2021 00:48 @a user
v. 4 Apr 14, 2021 01:03 @a user
v. 3 Apr 07, 2021 23:09 @a user
v. 2 Apr 07, 2021 23:08 @a user
v. 1 Apr 07, 2021 04:50 @a user