Credential disclosure via Kibana request-body audit logging
Published Mar 31, 2026 · Updated Mar 31, 2026
Credential exposure in Search Guard FLX 1.0.0 through 4.0.1 allows remote authenticated users with audit-log access to read Kibana user credentials. The audit logger records HTTP request bodies by default and fails to exclude the /_searchguard/auth/session login path, placing submitted credentials in audit events. Exploitation requires request-body logging and access to the audit destination; the disclosed credentials permit account impersonation without altering or interrupting the service.
Summary
What happened
Credential exposure in Search Guard FLX 1.0.0 through 4.0.1 allows remote authenticated users with audit-log access to read Kibana user credentials. The audit logger records HTTP request bodies by default and fails to exclude the /_searchguard/auth/session login path, placing submitted credentials in audit events. Exploitation requires request-body logging and access to the audit destination; the disclosed credentials permit account impersonation without altering or interrupting the service.
The record
- CVE
- CVE-2026-4819
- Published
- Mar 31, 2026
- Updated
- Mar 31, 2026
- Vendor
- floragunn GmbH
- Product
- Search Guard FLX
- Classifications
- CWE-522, CWE-532, T1552.001
- Attack vector
- network
- Privileges
- admin
Timeline
How it unfolded
- Mar 31, 2026CVE publishedPublication date reported by the CVE source.
- Mar 31, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=1.0.0 <=4.0.1
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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