In affected versions of Octopus Deploy it is possible to unmask variable secrets using the variable preview function
https://advisories.octopus.com/post/2023/sa2023-07/
Source: Mitre, NVD
Published: 2023-05-02
Updated: 2023-12-14
Base Score: 5
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N
Severity: Medium
Base Score: 5.3
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N