CVE-2026-72663

Inefficient Algorithmic Complexity in Kibana Leading to Denial of Service

State: Published
Severity: 6.5 Medium
Published: Aug 13, 2026
Updated: Aug 13, 2026
Reserved: Aug 10, 2026

Description

Inefficient Algorithmic Complexity (CWE-407) in Kibana can lead to denial of service via Input Data Manipulation (CAPEC-153). A specially crafted, deeply nested expression submitted to a Kibana TSVB visualization is evaluated with a worst-case cost that grows disproportionately with the size of the input. Because the evaluation runs synchronously, a single request consumes the Kibana request-processing thread indefinitely, and Kibana stops responding to all further requests until the service is restarted.

Scores

CVSS	Score	Vector	Source
3.1	6.5 Medium	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H	elastic

Weaknesses

CWE-407 Inefficient Algorithmic Complexity

Affected Products

Product	Versions
KibanaElastic	8.0.0 through 8.19.19Affected 9.0.0 through 9.4.4Affected

References

https://discuss.elastic.co/t/kibana-8-19-20-and-9-4-5-security-update-esa-2026-104/389520

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