CVE-2026-50011
HIGHNetty has unbounded pre-allocation in RedisArrayAggregator from RESP array length
Title source: cnaDescription
Netty is a network application framework for development of protocol servers and clients. Prior to versions 4.1.135.Final and 4.2.15.Final, RedisArrayAggregator pre-allocates ArrayList with initial capacity equal to the RESP array element count declared in an array header. That count is taken from the wire before the corresponding child messages exist. A small malicious header can claim a huge initial capacity. 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-5w86-c3rq-vjj7
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
0.0034
EPSS Percentile
25.1%
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
CWE-770
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 12, 2026
Tracked Since
Jun 12, 2026