Is CVE-2026-26936 in the CISA KEV catalog?

No. CVE-2026-26936 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-26936?

CVE-2026-26936 has a CVSS v3 base score of 4.9 (MEDIUM).

What is the EPSS score for CVE-2026-26936?

CVE-2026-26936 has an EPSS score of 0.33% (24th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-26936?

Upgrade kibana to 9.2.5 or later.

CVE & CISA-KEV Catalog

CVE-2026-26936

MEDIUM

4.9

CVSS v3

NVD

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).

CWE-1333

How to fix

Remediation Available

kibanaNVD

Affected:>= 9.0.0, < 9.2.5Fixed in:9.2.5CVE-2026-26936derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredHigh

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

0.33%probability of exploitation in 30 days

24thpercentile

Low risk: more likely to be exploited than 24% of all known CVEs.

References

Vendor Advisory1

discuss.elastic.co

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-03-02.