CVE-2026-44250
Received Received - Intake
Denial of Service in Netty Redis Codec

Publication date: 2026-06-11

Last updated on: 2026-06-11

Assigner: GitHub, Inc.

Description
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.
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Meta Information
Published
2026-06-11
Last Modified
2026-06-11
Generated
2026-06-12
AI Q&A
2026-06-12
EPSS Evaluated
N/A
NVD
CVE-2026-44250
Affected Vendors & Products
Showing 2 associated CPEs
Vendor Product Version / Range
netty netty_codec_redis to 4.1.135.Final (exc)
netty netty_codec_redis to 4.2.15.Final (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-400 The product does not properly control the allocation and maintenance of a limited resource.
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Executive Summary

This vulnerability exists in the netty-codec-redis component of the Netty framework prior to versions 4.1.135.Final and 4.2.15.Final. An attacker can exploit it by sending a specially crafted Redis payload containing deeply nested arrays. This causes the server to allocate an excessive number of state objects and collections, which leads to memory exhaustion and ultimately triggers an OutOfMemoryError.

Impact Analysis

The primary impact of this vulnerability is a Denial of Service (DoS) condition. By exploiting it, an attacker can cause the affected server to run out of memory and crash or become unresponsive. This disrupts normal service availability, potentially causing downtime and affecting users or dependent systems.

Mitigation Strategies

To mitigate this vulnerability, upgrade netty-codec-redis to version 4.1.135.Final or 4.2.15.Final or later, as these versions contain the patch that fixes the issue.

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