Uncontrolled Resource Consumption Issue in Ash Project by Ash-Project

CVE-2026-82742

What is CVE-2026-82742?

The Ash Project contains a vulnerability where an attacker can exploit uncontrolled resource consumption by triggering a filter that spans multiple to-many relationships within node memory. The filtering mechanism eagerly creates a full Cartesian product across its relationships, which can lead to massive memory allocation and potential exhaustion of the node. This occurs when a record has K to-many relationships with M rows each, causing the system to materialize M^K scenarios before even evaluating any predicate. Recent patches have improved this process by implementing lazy expansion of these relationships, significantly mitigating memory allocation issues by stopping at the first matching scenario.

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