CVE-2026-44890
HIGHNetty has Unbounded Direct Memory Consumption in its RedisDecoder
Title source: cnaDescription
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.
References (3)
Core 3
Core References
X_Refsource_Confirm x_refsource_confirm
https://github.com/netty/netty/security/advisories/GHSA-6ghj-frrj-jjj3
X_Refsource_Misc x_refsource_misc
https://github.com/netty/netty/releases/tag/netty-4.1.135.Final
X_Refsource_Misc x_refsource_misc
https://github.com/netty/netty/releases/tag/netty-4.2.15.Final
Scores
CVSS v3
7.5
EPSS
0.0061
EPSS Percentile
44.3%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-400
Status
published
Products (5)
io.netty/netty-codec-redis
0 - 4.1.135.FinalMaven
io.netty/netty-codec-redis
4.2.0.Final - 4.2.15.FinalMaven
netty/netty
< 4.1.135
netty/netty
< 4.1.135.Final
netty/netty
>= 4.2.0.Final, < 4.2.15.Final
Published
Jun 11, 2026
Tracked Since
Jun 12, 2026