# Kibana 9.3.3 Security Update (ESA-2026-40)

**URL:** https://discuss.elastic.co/t/kibana-9-3-3-security-update-esa-2026-40/386562
**Category:** Security Announcements
**Created:** [May 28, 2026, 7:26pm UTC](https://discuss.elastic.co/t/kibana-9-3-3-security-update-esa-2026-40/386562 "2026-05-28T19:26:45Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![ismisepaul](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/ismisepaul/32/102235_2.png) [@ismisepaul](https://discuss.elastic.co/u/ismisepaul)
#### Post date: [May 28, 2026, 7:26pm UTC](https://discuss.elastic.co/t/kibana-9-3-3-security-update-esa-2026-40/386562/1 "2026-05-28T19:26:45Z")

</div>

**Server-Side Request Forgery (SSRF) in Kibana Leading to Unauthorized Network Access**

Server-Side Request Forgery (CWE-918) in Kibana can allow an authenticated user with connector management privileges to bypass the operator-configured connector allowlist, causing the Kibana server to issue outbound requests to destinations the egress controls were intended to block.

**Affected Versions:**

- 9.x: All versions from 9.3.0 up to and including 9.3.2

**Affected Configurations:**

- This issue applies to Kibana deployments where `xpack.actions.allowedHosts` is configured to a non-wildcard value as a network egress control. Deployments using the default ["\*"] setting do not enforce an allowlist and are not affected by the bypass described in this advisory.

**Solutions and Mitigations:**

The issue is resolved in versions 9.3.3.

**For Users that Cannot Upgrade:**

- Restrict connector management privileges

**Elastic Cloud Serverless**

Due to our continuous deployment and patching model, the vulnerability described in this security advisory was remediated in our Elastic Cloud Serverless offering before the public disclosure.

**Severity:** CVSSv3.1: Medium ( 6.3 ) - AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N  
**CVE ID:** CVE-2026-49093  
**Problem Type:** CWE-918 - Server-Side Request Forgery (SSRF)