What’s Vulnerable › Vulnerabilities

CVE-2026-4819: Search Guard audit logs can contain under certain conditions user credentials

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-03-31 · updated 2026-07-24
• Weakness: CWE-522

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.

Affected products

• floragunn Search Guard FLX: from 1.0.0 before 4.1.0 — fixed in 4.1.0

How to fix

Upgrade to a fixed version: floragunn Search Guard FLX 4.1.0. Check the vendor advisory for mitigations.

References

• https://docs.search-guard.com/latest/changelog-searchguard-flx-4_1_0
• https://search-guard.com/cve-advisory/

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