In Search Guard FLX up to version 4.0.1, it is possible to use specially crafted requests to redirect the user to an untrusted URL.
https://search-guard.com/cve-advisory/
https://docs.search-guard.com/latest/changelog-searchguard-flx-4_1_0
Source: Mitre, NVD
Published: 2026-03-31
Updated: 2026-04-03
Base Score: 5
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N
Severity: Medium
Base Score: 4.3
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
EPSS: 0.00027