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6.5 Medium

CVE-2026-63260 Uncontrolled Resource Consumption (CWE-400) in Kibana can lead to denial of service via Excessive Allocation (CAPEC-130)

Description

Uncontrolled Resource Consumption (CWE-400) in Kibana can lead to denial of service via Excessive Allocation (CAPEC-130). An authenticated attacker with low-privilege access can trigger a denial of service condition in Kibana by sending a specially crafted, oversized request payload. Processing this user-supplied input requires resource-intensive memory allocation that can exhaust the available heap memory in the Kibana process, causing it to crash and become unavailable to all users.

Affected products and versions

Product Affected versions Fixed in
Kibana 9.4 9.4.0 → 9.4.3 No fix stated
Kibana 9.0 9.0.0 → 9.3.7 No fix stated
Kibana 8.0 8.0.0 → 8.19.18 No fix stated

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