CVE-2026-26934 — Improper Validation of Specified Quantity in Input in Kibana Leading to Denial of Service

CVE-2026-26934

Improper Validation of Specified Quantity in Input in Kibana Leading to Denial of Service PUBLISHED

Description (CNA)

Improper Validation of Specified Quantity in Input (CWE-1284) in Kibana can allow an authenticated attacker with view-only privileges to cause a Denial of Service via Input Data Manipulation (CAPEC-153). An attacker can send a specially crafted, malformed payload causing excessive resource consumption and resulting in Kibana becoming unresponsive or crashing.

Affected (CNA)

Vendor / product	Versions
Elastic / Kibana	affected 8.18.0 through 8.19.11; affected 9.0.0 through 9.2.5; affected 9.3.0 through 9.3.0

CWE

CWE-1284

References

https://discuss.elastic.co/t/kibana-8-19-12-9-2-6-9-3-1-security-update-esa-2026-12/385248

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.