CVE-2026-4818 Details
Description
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.
A vulnerability exists in Search Guard FLX versions 3.0.0 prior to 4.0.1, allowing users without the necessary privileges to perform certain management operations on data streams. This issue arises from inadequate access controls, which can be exploited to manipulate data stream management functions.
Users can upgrade to Search Guard FLX version 4.1.0, where this vulnerability has been fixed. If an immediate upgrade is not possible, the issue can be mitigated by adding 'indices:admin/data_stream/modify' to the 'searchguard.admin_only_indices' property in the 'elasticsearch.yml' configuration file.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Mar 31, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://docs.search-guard.com/latest/changelog-searchguard-flx-4_1_0 | [email protected] | Release Notes |
| https://search-guard.com/cve-advisory/ | [email protected] | Vendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-285 | Improper Authorization | [email protected] |
| CWE-862 | Missing Authorization | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| search-guard flx | >= 3.0.0, < 4.1.0 |
CPE
Remediation
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Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 24, 2026 | CVE Translated | [email protected] |
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Apr 3, 2026 | Initial Analysis | [email protected] |
| Mar 31, 2026 | New CVE Received | [email protected] |