CVE-2026-44250 — Netty: Memory Exhaustion in RedisArrayAggregator due to Deeply Nested Arrays

Description (CNA)

Netty is a network application framework for development of protocol servers and clients. In netty-codec-redis prior to versions 4.1.135.Final and 4.2.15.Final, an attacker can cause DoS by sending a crafted Redis payload with deeply nested arrays. This forces the server to allocate a massive number of state objects and collections, leading to memory exhaustion and an OutOfMemoryError. Versions 4.1.135.Final and 4.2.15.Final patch the issue.

Affected (CNA)

Vendor / product	Versions
netty / netty	affected >= 4.2.0.Final, < 4.2.15.Final; affected < 4.1.135.Final

CWE

CWE-400

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.

redhat-SADP

A flaw was found in netty-codec-redis. A remote attacker can exploit this vulnerability by sending a specially crafted Redis payload containing deeply nested arrays. This action forces the server to allocate a large number of state objects and collections, leading to memory exhaustion. Consequently, this can result in a Denial of Service (DoS) condition, rendering the affected server unresponsive.