Octopus · Octopus Deploy · CVE-2018-18850
**Name of the Vulnerable Software and Affected Versions**
Octopus Deploy versions 2018.8.0 through 2018.9.0
**Description**
The issue allows an authenticated user with permission to modify deployment processes to upload a maliciously crafted YAML configuration. This could potentially allow for remote execution of arbitrary code, running in the same context as the Octopus Server, which by default is SYSTEM for self-hosted installations.
**Recommendations**
For versions 2018.8.0 through 2018.9.0, update to version 2018.9.1 or later to resolve the issue.