CVE-2026-42398
Server-Side Request Forgery (SSRF) in Kibana Leading to Unauthorized Network Access
7.7
HIGH
CVSS 3.1
EPSS 0.03%
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.
How to fix CVE-2026-42398
To remediate CVE-2026-42398, upgrade the affected package to a fixed version below.
- —upgrade to 9.2.8 or later
- —upgrade to 9.2.8 or later
Is CVE-2026-42398 being exploited?
Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- >= 9.0.0, < 9.2.8, >= 9.3.0, < 9.3.2
- >= 9.0.0, < 9.2.8, >= 9.3.0, < 9.3.2
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.7 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N |