Denial of Service Issue in Kibana by Elastic
CVE-2026-26936

4.9MEDIUM

Key Information:

Vendor

Elastic
Status
Kibana
Vendor
CVE Published:
26 February 2026

What is CVE-2026-26936?

The vulnerability arises from inefficient regular expression handling in the AI Inference Anonymization Engine of Kibana, which can trigger a Denial of Service (DoS) condition. This is caused by exponential blowup scenarios when processing complex regular expressions, allowing potential attackers to overwhelm the system and disrupt services.

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Affected Version(s)

Kibana 9.0.0 <= 9.2.4

Kibana 8.0.0 <= 8.19.10

References

https://discuss.elastic.co/t/kibana-8-19-11-9-2-5-securit...

CVSS V3.1

Score:
4.9
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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