CVE-2026-4819: Search-Guard Flx

Medium severity, CVSS 6.5. EPSS: 0.4% chance of exploitation in the next 30 days.

In Search Guard FLX versions from 1.0.0 up to 4.0.1, the audit logging feature might log user credentials from users logging into Kibana.

Affected products

• Search-Guard Flx: from 1.0.0, before 4.1.0 (fixed in 4.1.0)

Published 2026-03-31. Last modified 2026-07-24.