Memory Allocation with Excessive Size Value

Overview kibana is an open source Apache Licensed, browser-based analytics and search dashboard for Elasticsearch. Affected versions of this package are vulnerable to Memory Allocation with Excessive Size Value in the decoding and deserialization process of an opaque identifier. An attacker can...

EUVD-2026-58251

A flaw in Elasticsearch allows a low-privileged authenticated user to submit a single small request containing a forged opaque identifier. Elasticsearch decodes and deserializes the identifier before confirming that it was legitimately issued by the cluster, and a size value carried inside the...