Vulnerabilities CVE-2026-42398

CVE-2026-42398

High

Open

TLP:CLEAR

Server-Side Request Forgery (SSRF) in Kibana Leading to Unauthorized Network Access

NVD CVE.org

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Description

Server-Side Request Forgery (CWE-918) in Kibana allows authenticated users with connector management privileges to bypass the operator-configured connection allowlist. By configuring a Webhook connector with a crafted target, an attacker can cause Kibana to issue outbound requests to destinations that the egress restriction controls were intended to block.

Details

CVSS Score: 7.7
EPSS Score ⓘ: 0.30%

22.6th percentile
CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Confidence: 90%
Published: May 28, 2026
Last Modified: May 28, 2026

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