CVE-2026-72674
MediumCVSS 6.5Exploitation Probability (EPSS)
Low risk21th percentile - higher than 21% of all known CVEs
Summary
Kibana has a resource allocation vulnerability (CWE-770) leading to denial of service via excessive allocation. A user-supplied list of document fields in the Playground for RAG feature is not bounded or de-duplicated before building responses. A single crafted request can make Kibana build a response far larger than the source data, exhausting instance resources.
Risk Assessment
The attack can exhaust memory and make Kibana unavailable to all users. A single request is sufficient, making the attack easy to perform.
Recommendation
Install the Kibana update containing the fix. Restrict access to the Playground feature and monitor memory usage.
Original NVD description (English source)
Allocation of Resources Without Limits or Throttling (CWE-770) in Kibana can lead to a denial of service via Excessive Allocation (CAPEC-130). A user-supplied list of document fields accepted by the Kibana Playground for RAG feature was neither bounded in length nor de-duplicated before it was used to assemble the response for each matching document. A single crafted request could therefore make Kibana build a response far larger than the data it was derived from, and the resulting processing and memory pressure exhausts the resources of the Kibana instance.