VULNERABILITY INTELLIGENCE

CVE-2026-42398

CVSS score7.7 HIGH
EPSS probability0.30%
CISA KEVNot currently listed
Published2026-05-28
Last modified2026-10-14
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

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.

Weakness classification

  • security@elastic.co: CWE-918

Primary references