Ansible 2.5 prior to 2.5.5, and 2.4 prior to 2.4.5, do not honor the no_log task flag for failed tasks. When the no_log flag has been used to protect sensitive data passed to a task from being logged, and that task does not run successfully, Ansible will expose sensitive data in log files and on the terminal of the user running Ansible.
https://www.debian.org/security/2019/dsa-4396
https://usn.ubuntu.com/4072-1/
https://access.redhat.com/errata/RHSA-2019:0054
https://access.redhat.com/errata/RHSA-2018:2585
https://access.redhat.com/errata/RHSA-2018:2184
https://access.redhat.com/errata/RHSA-2018:2079
https://access.redhat.com/errata/RHSA-2018:2022
https://access.redhat.com/errata/RHSA-2018:1949
Published: 2018-07-03
Updated: 2024-11-21
Base Score: 4.3
Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:N/A:N
Severity: Medium
Base Score: 5.9
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Severity: Medium
Base Score: 8.2
Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Severity: High
EPSS: 0.02015