CVE-2026-33458 Server-Side Request Forgery (SSRF) in Kibana One Workflow Leading to Information Disclosure
Authenticated users can bypass host allowlists in Kibana One Workflow to access internal endpoints and disclose sensitive data.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-33458?
CVE-2026-33458 is a medium-severity server-side request forgery vulnerability in Elastic Kibana, published on 8 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Server-Side Request Forgery (CWE-918) in Kibana One Workflow can lead to information disclosure. An authenticated user with workflow creation and execution privileges can bypass host allowlist restrictions in the Workflows Execution Engine, potentially exposing sensitive internal endpoints and data.
Weakness: CWE-918
Which versions are affected by CVE-2026-33458?
2 open source packages ship an affected version, including kibana and elk. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
kibana Bitnami | From 9.3.0 | 9.3.3 |
elk Bitnami | From 9.3.0 | 9.3.3 |
Products include Elastic Kibana.
How do I fix CVE-2026-33458?
Upgrade kibana to 9.3.3 or later.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2026-33458 being exploited?
There is no known exploitation of CVE-2026-33458 in the wild and no public exploit code.
Other vulnerabilities in Elastic Kibana
Sources
Also known as BIT-elk-2026-33458, BIT-kibana-2026-33458, GHSA-grxp-xwh4-267v, MINI-4wrv-7jq3-6pgv.