Home/CVE/In Search Guard FLX versions from 1.0.0 up to 4.0.1, the audit logging feature might log user credentials from users log
CVE

CVE-2026-4819

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

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.

MEDIUM · CVSS 4.9 EPSS 0.00043
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  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-522Insufficiently Protected Credentials
CWE-532Insertion of Sensitive Information into Log File
▤

Affected Products & Versions

1
search-guard flx>= 1.0.0 and < 4.1.0
▣

Scoring & Timeline

4.9
MEDIUM · CVSS v3.1 · security@search-guard.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD31 Mar 2026 · 04:16 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
🔗

References & Sources

2
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://docs.search-guard.com/latest/changelog-searchguard-flx-4_1_0Release Notes
https://search-guard.com/cve-advisory/Vendor Advisory
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