CVE-2026-4818 is a high-severity authorization bypass vulnerability affecting Search Guard FLX versions 3.0.0 up to 4.0.1. This flaw allows low-privileged authenticated users to execute unauthorized management operations against data streams, leading to high confidentiality and integrity impacts. Rated with a CVSS score of 8.1 (HIGH), it is network-exploitable with low attack complexity. While listed as "Active" on a hot list, there is currently no public exploit code, evidence of active exploitation, or significant community discussion.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 3.0.0, < 4.1.0CPE matchmatch criteria | cpe:2.3:a:search-guard:flx:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.