CVE-2026-26936

Name: CVE-2026-26936
Creator: NVD / NIST
Published: 2026-02-26T18:23:07.973+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.33%

Last modified Jun 17, 2026

CVE-2026-26936 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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).. EPSS estimates a 0.33% chance of exploitation in the next 30 days.

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).

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

0.33%

24.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-1333

Affected Software

Vendor	Product	Versions
Elastic	Kibana	>= 8.0.0, < 8.19.11
Elastic	Kibana	>= 9.0.0, < 9.2.5

References

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

Timeline

Published: Feb 26, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-26936?

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).

How severe is CVE-2026-26936?

CVE-2026-26936 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.33% probability of exploitation in the next 30 days.

How do I fix CVE-2026-26936?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-26936?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST