CVE-2026-49089: Allocation of Resources Without Limits or Throttling (CWE-770) in Kibana can lead to denial of service via Excessive Allocation (CAPEC-130). A query expression…

PriorityP336medium6.5CVSS 3.1

AVNACLPRLUINSUCNINAH

EPSS

0.47%

39.8th percentile

Allocation of Resources Without Limits or Throttling (CWE-770) in Kibana can lead to denial of service via Excessive Allocation (CAPEC-130). A query expression accepted by a connector reporting operation was processed without any limit on its size, and an oversized expression caused the Kibana process to spend an unbounded amount of time evaluating it. An authenticated user with read-only privileges was able to send a single request that left Kibana unable to serve any user until the process was restarted.

Affected

4 ranges

Vendor	Product	Version range	Fixed in
elastic	kibana	>= 8.0.0 < 8.19.20	8.19.20
elastic	kibana	8.0.0 – 8.19.19	—
elastic	kibana	>= 9.0.0 < 9.4.5	9.4.5
elastic	kibana	9.0.0 – 9.4.4	—

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