CVE-2026-4818: medium-severity vulnerability in floragunn Search Guard FLX
Some management operations on data streams are not properly restricted when user does not have the necessary privileges
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 6.8epss 0.2%
In Search Guard FLX versions from 3.0.0 up to 4.0.1, there exists an issue which allows users without the necessary privileges to execute some management operations against data streams.
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/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-2026-4819MEDIUMSearch Guard audit logs can contain under certain conditions user credentialsEPSS 0.2%CVE-2025-13653MEDIUMUnauthorized access to documents in data streams with specially crafted requestsEPSS 0.2%CVE-2026-4799MEDIUMOpen redirect vulnerability in Search Guard Kibana Plugin via manipulated requestsEPSS 0.2%