In affected versions of Octopus Deploy it is possible for a low privileged guest user to craft a request that allows enumeration/recon of an environment.

In affected versions of Octopus Deploy it is possible for a low privileged guest user to interact with extension endpoints.

In affected versions of Octopus Deploy it is possible to discover network details via error message

In affected versions of Octopus Deploy it is possible to upload a zipbomb file as a task which results in Denial of Service

In affected versions of Octopus Deploy it is possible to render user supplied input into the webpage

In affected versions of Octopus Deploy it is possible for a user to introduce code via offline package creation

In affected versions of Octopus Deploy it is possible for a user to view Workerpools without being explicitly assigned permissions to view these items

In affected versions of Octopus Deploy it is possible for a user to view Tagsets without being explicitly assigned permissions to view these items

In affected versions of Octopus Deploy it is possible to upload a zipbomb file as a task which results in Denial of Service

In affected versions of Octopus Deploy users of certain browsers using AD to sign-in to Octopus Server were able to bypass authentication checks and be redirected to the configured redirect url without any validation.

In affected versions of Octopus Deploy it is possible for certain types of sensitive variables to inadvertently become unmasked when viewed in variable preview.

In affected versions of Octopus Server where access is managed by an external authentication provider, it was possible that the API key/keys of a disabled/deleted user were still valid after the access was revoked.

In affected versions of Octopus Server it is possible for a session token to be valid indefinitely due to improper validation of the session token parameters.

In affected versions of Octopus Server it is possible to reveal the existence of resources in a space that the user does not have access to due to verbose error messaging.

In affected versions of Octopus Server it was identified that when a sensitive value is a substring of another value, sensitive value masking will only partially work.

In affected versions of Octopus Server it was identified that a session cookie could be used as the CSRF token

In affected versions of Octopus Server it was identified that the same encryption process was used for both encrypting session cookies and variables.

In affected versions of Octopus Deploy it is possible to bypass rate limiting on login using null bytes.

In affected versions of Octopus Deploy it is possible to upload a package to built-in feed with insufficient permissions after re-indexing packages.

In affected versions of Octopus Deploy it is possible to perform a Regex Denial of Service targeting the build information request validation.