Icinga 2 v2.8.0 through v2.11.7 and v2.12.2 has an issue where revoked certificates due for renewal will automatically be renewed, ignoring the CRL. This issue is fixed in Icinga 2 v2.11.8 and v2.12.3.
https://github.com/Icinga/icinga2/security/advisories/GHSA-pcmr-2p2f-r7j6
https://github.com/Icinga/icinga2/compare/v2.12.1...v2.12.2
Source: Mitre, NVD
Published: 2020-12-15
Updated: 2020-12-18
Base Score: 6.4
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:N
Severity: Medium
Base Score: 9.1
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Severity: Critical
EPSS: 0.00126