CVE-2026-26936 - Vulnerability Details - OpenCVE

Inefficient Regular Expression Complexity (CWE-1333) in the AI Inference Anonymization Engine in Kibana can lead Denial of Service via Regular Expression Exponential Blowup (CAPEC-492).

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required High

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable no

Technical Impact partial

Vendors	Products
Elastic	Kibana

Configuration 1 [-]

OR	cpe:2.3:a:elastic:kibana::::::::
	cpe:2.3:a:elastic:kibana::::::::

No data.

References

Link	Providers
https://discuss.elastic.co/t/kibana-8-19-11-9-2-5-security-update-esa-2026-14/385250

History

Mon, 02 Mar 2026 16:15:00 +0000

Type	Values Removed	Values Added
CPEs		cpe:2.3:a:elastic:kibana::::::::

Fri, 27 Feb 2026 17:15:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Fri, 27 Feb 2026 09:15:00 +0000

Type	Values Removed	Values Added
First Time appeared		Elastic Elastic kibana
Vendors & Products		Elastic Elastic kibana

Thu, 26 Feb 2026 17:30:00 +0000

Type	Values Removed	Values Added
Description		Inefficient Regular Expression Complexity (CWE-1333) in the AI Inference Anonymization Engine in Kibana can lead Denial of Service via Regular Expression Exponential Blowup (CAPEC-492).
Title		Inefficient Regular Expression Complexity in Kibana Leading to Denial of Service
Weaknesses		CWE-1333
References		https://discuss.elastic.co/t/kibana-8-19-11-9-2-5-security-update-esa-2026-14/385250
Metrics		cvssV3_1 `{'score': 4.9, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H'}`

MITRE

Status: PUBLISHED

Assigner: elastic

Published: 2026-02-26T17:07:40.604Z

Updated: 2026-02-26T18:28:11.114Z

Reserved: 2026-02-16T16:42:05.774Z

Link: CVE-2026-26936

Vulnrichment

Updated: 2026-02-26T17:53:26.995Z

NVD

Status : Analyzed

Published: 2026-02-26T18:23:07.973

Modified: 2026-03-02T16:01:07.393

Link: CVE-2026-26936

Redhat

No data.

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