What is GHSA-43ww-gwmw-f89v?

GHSA-43ww-gwmw-f89v is a security advisory published by GitHub Security Advisories with High severity. Server-Side Request Forgery (CWE-918) in Kibana allows authenticated users with connector...

Which CVE IDs does GHSA-43ww-gwmw-f89v cover?

GHSA-43ww-gwmw-f89v covers the following CVE IDs: CVE-2026-42398. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-43ww-gwmw-f89v?

GHSA-43ww-gwmw-f89v has a CVSS v3 base score of 7.7, published by GitHub Security Advisories.

GHSA-43ww-gwmw-f89vHighCVSS 7.7

Server-Side Request Forgery (CWE-918) in Kibana allows authenticated users with connector...

Vendor

GitHub Security Advisories

Published

May 28, 2026

Last Modified

May 28, 2026

🔗 CVE IDs covered (1)

CVE-2026-42398 →

📋 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.

🔗 References (3)

https://nvd.nist.gov/vuln/detail/CVE-2026-42398
https://discuss.elastic.co/t/kibana-9-2-8-and-9-3-2-security-update-esa-2026-37/386557
https://github.com/advisories/GHSA-43ww-gwmw-f89v