CVE-2026-44890
Published:June 11, 2026
Updated:June 11, 2026
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 crafted Redis payloads across multiple connections without "\r\n". This exhausts the server's direct memory pool (OutOfDirectMemoryError), preventing legitimate connections from being processed. Versions 4.1.135.Final and 4.2.15.Final patch the issue.
Affected Packages
https://github.com/netty/netty.git (GITHUB):
Affected version(s) >=netty-4.0.0.Alpha1 <netty-4.1.135.FinalFix Suggestion:
Update to version netty-4.1.135.Finalhttps://github.com/netty/netty.git (GITHUB):
Affected version(s) >=netty-4.2.0.Final <netty-4.2.15.FinalFix Suggestion:
Update to version netty-4.2.15.Finalio.netty:netty-codec-redis (JAVA):
Affected version(s) >=4.2.0.Final <4.2.15.FinalFix Suggestion:
Update to version 4.2.15.Finalio.netty:netty-codec-redis (JAVA):
Affected version(s) >=4.1.0.Final <4.1.135.FinalFix Suggestion:
Update to version 4.1.135.FinalRelated Resources (4)
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Contact UsCVSS v4
Base Score:
8.7
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Weakness Type (CWE)
Uncontrolled Resource Consumption