CVE-2026-56818 Netty: RedisArrayAggregator max-elements failure leaves retained partial aggregate state

Netty is an asynchronous, event-driven network application framework. Prior to 4.1.136.Final and 4.2.16.Final, the RedisArrayAggregator Redis codec clears retained partial aggregate state when the maxNestedArrayDepth limit is exceeded, but it does not clear the same state when the sibling...

CVE-2026-56818

CVE-2026-56818 affects Netty’s Redis codec (RedisArrayAggregator) where the maxElements path fails to clear retained partial aggregate state, causing a memory leak and attacker-controlled state to remain across a security-limit exception. The issue is triggered when a nested array header exceeds ...