CVE-2026-4819: medium-severity vulnerability in floragunn Search Guard FLX
Search Guard audit logs can contain under certain conditions user credentials
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 4.9epss 0.2%
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.
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
Affected products
floragunn · Search Guard FLXRelated CVEs — floragunn Search Guard FLX
In the same product, most dangerous first.
CVE-2025-12149MEDIUMUnauthorized access to documents protected by Document-Level Security (DLS), when Signals watches include a search query involving protected documentsEPSS 0.3%CVE-2025-12148MEDIUMUnauthorized access to fields protected by Field Masking (FM) for fields of type IPEPSS 0.3%CVE-2025-12147MEDIUMUnauthorized access to fields protected by Field-Level Security (FLS) when those fields are members of an objectEPSS 0.3%CVE-2025-13653MEDIUMUnauthorized access to documents in data streams with specially crafted requestsEPSS 0.2%CVE-2026-4818MEDIUMSome management operations on data streams are not properly restricted when user does not have the necessary privilegesEPSS 0.2%CVE-2026-4799MEDIUMOpen redirect vulnerability in Search Guard Kibana Plugin via manipulated requestsEPSS 0.2%