# Kibana 8.19.11, 9.2.5 Security Update (ESA-2026-15)

**URL:** <https://discuss.elastic.co/t/kibana-8-19-11-9-2-5-security-update-esa-2026-15/385251>\
**Category:** Security Announcements\
**Created:** [February 26, 2026, 4:54pm UTC](https://discuss.elastic.co/t/kibana-8-19-11-9-2-5-security-update-esa-2026-15/385251 "2026-02-26T16:54:15Z")\
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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:** [February 26, 2026, 4:54pm UTC](https://discuss.elastic.co/t/kibana-8-19-11-9-2-5-security-update-esa-2026-15/385251/1 "2026-02-26T16:54:16Z")

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**Uncontrolled Resource Consumption in Kibana Leading to Denial of Service**

Uncontrolled Resource Consumption (CWE-400) in the Timelion component in Kibana can lead Denial of Service via Input Data Manipulation (CAPEC-153)

**Affected Versions:**

- 8.x: All versions from 8.0.0 up to and including 8.19.10
- 9.x: All versions from 9.0.0 up to and including 9.2.4

**Affected Configurations:**  
Timelion is a legacy visualization feature that is available by default in Kibana installations.

**Solutions and Mitigations:**

The issue is resolved in version 8.19.11, 9.2.5.

**For Users that Cannot Upgrade:**

**Self Managed**

Customers who do not use Timelion visualizations can disable the plugin by adding the following to `kibana.yml`

```auto
vis_type_timelion.enabled: false

```

**Cloud**

Disabling this plugin in Elastic Cloud Hosted environments is not possible. Customers on Elastic Cloud Hosted should prioritize upgrading to a patched version.

**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 ( 6.5 ) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H  
**CVE ID** : CVE-2026-26937  
**Problem Type:** CWE-400 - Uncontrolled Resource Consumption  
**Impact:** CAPEC-153 - Input Data Manipulation

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_[View the full topic](https://discuss.elastic.co/t/kibana-8-19-11-9-2-5-security-update-esa-2026-15/385251)._