# Kibana 9.3.7, 9.4.4 Security Update (ESA-2026-55)

**URL:** <https://discuss.elastic.co/t/kibana-9-3-7-9-4-4-security-update-esa-2026-55/388554>\
**Category:** Security Announcements\
**Created:** [July 21, 2026, 7:31pm UTC](https://discuss.elastic.co/t/kibana-9-3-7-9-4-4-security-update-esa-2026-55/388554 "2026-07-21T19:31:33Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![cronosda](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/cronosda/32/147882_2.png) [@cronosda](https://discuss.elastic.co/u/cronosda)\
**Post date:** [July 21, 2026, 7:31pm UTC](https://discuss.elastic.co/t/kibana-9-3-7-9-4-4-security-update-esa-2026-55/388554/1 "2026-07-21T19:31:33Z")

</div>

**Allocation of Resources Without Limits or Throttling in Kibana Leading to Denial of Service**

Allocation of Resources Without Limits or Throttling (CWE-770) in Kibana can lead to a denial of service via Excessive Allocation (CAPEC-130). An authenticated user can submit a specially crafted request to affected Entity Analytics endpoints containing an oversized input value that causes excessive resource consumption, which may render Kibana unavailable.

**Affected Versions:**

- 9.x:
  - All versions from 9.3.0 up to and including 9.3.6
  - All versions from 9.4.0 up to and including 9.4.3

- (8.x not affected)

**Affected Configurations:**

- Affects deployments that use the affected Entity Analytics functionality. Exploitation requires an authenticated account with access to that functionality.

**Solutions and Mitigations:**

The issue is resolved in versions 9.3.7 and 9.4.4.

**For Users that Cannot Upgrade:**

There are no workarounds for this vulnerability.

**Indicators of Compromise (IOC)**

No specific indicators of compromise have been identified for this vulnerability.

**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-2026-42397  
**Problem Type:** CWE-770 - Allocation of Resources Without Limits or Throttling  
**Impact:** CAPEC-130 - Excessive Allocation