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Vulnerability record · CVE-2026-4819 · published 31 March 2026

CVE-2026-4819: Search-guard flx insufficiently protected credentials vulnerability

Search Guard · Flx

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.

6.5 CVSS 3.1 Medium EPSS 0.36% · top 72.9% CWE-522 · Insufficiently protected credentialsCWE-532 · Sensitive information in log file
6.5CVSS 3.1 base score
0.36%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
24 Jul 2026Last modified by NVD

Description

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:L/UI:N/S:U/C:H/I:N/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://docs.search-guard.com/latest/changelog-searchguard-flx-4_1_0 Release Notes
https://search-guard.com/cve-advisory/ Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-4819), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.