What’s Vulnerable › Vulnerabilities
CVE-2026-42398: Server-Side Request Forgery (SSRF) in Kibana Leading to Unauthorized Network Access
- Severity: high (CVSS 7.7 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-05-28 · updated 2026-10-14
- Weakness: CWE-918
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.
Affected products
- Kibana: from 9.0.0 before 9.2.8; from 9.3.0 before 9.3.2 — fixed in 9.2.8, 9.3.2
How to fix
Upgrade to a fixed version: Kibana 9.2.8, 9.3.2. Check the vendor advisory for mitigations.
References
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