CVE-2026-4818 — MEDIUM (6.8)

Q: What is CVE-2026-4818?

CVE-2026-4818 is a vulnerability with a CVSS score of 6.8 (MEDIUM). 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.

Q: How severe is CVE-2026-4818?

CVE-2026-4818 has been rated MEDIUM with a CVSS base score of 6.8/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2026-4818?

Check the references section above for vendor advisories and patch information. Affected products include: Search-Guard Flx.

Vulnerability 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.

CVSS Score

6.8

MEDIUM

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

NONE

Affected Products

Vendor	Product	Versions
Search-Guard	Flx	>= 3.0.0, < 4.1.0

Related Weaknesses (CWE)

CWE-285 CWE-862

References

https://docs.search-guard.com/latest/changelog-searchguard-flx-4_1_0Release Notes
https://search-guard.com/cve-advisory/Vendor Advisory

FAQ

What is CVE-2026-4818?

CVE-2026-4818 is a vulnerability with a CVSS score of 6.8 (MEDIUM). 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.

How severe is CVE-2026-4818?

CVE-2026-4818 has been rated MEDIUM with a CVSS base score of 6.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-4818?

Check the references section above for vendor advisories and patch information. Affected products include: Search-Guard Flx.