Search Guard versions before 21.0 had an timing side channel issue when using the internal user database.
https://search-guard.com/cve-advisory/
https://docs.search-guard.com/6.x-21/changelog-searchguard-6-x-21_0
Source: Mitre, NVD
Published: 2019-08-13
Updated: 2026-06-17
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:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS: 0.00281