AIKIDO-2026-456232

TL;DR

The unevaluatedProperties and unevaluatedItems keywords are compiled into a recursive validator structure that eagerly follows $ref and $dynamicRef references to collect evaluated locations. When a schema contains a self-referential $dynamicRef combined with unevaluatedProperties or unevaluatedItems, the dynamic reference is followed back into itself with no cycle guard and recurses until the call stack is exhausted. A crafted schema therefore aborts the whole process with a stack overflow while the validator is being built instead of returning a result. The fix caches pending validators and adds a marking stack with cycle detection that break the recursive $dynamicRef cycle.