Description
Netty is an asynchronous, event-driven network application framework. Prior to 4.2.13.Final and 4.1.133.Final, the Netty Redis codec encoder (RedisEncoder) writes user-controlled string content directly to the network output buffer without validating or sanitizing CRLF (\r\n) characters. Since the Redis Serialization Protocol (RESP) uses CRLF as the command/response delimiter, an attacker who can control the content of a Redis message can inject arbitrary Redis commands or forge fake responses. This vulnerability is fixed in 4.2.13.Final and 4.1.133.Final.
References (1)
Core 1
Core References
X_Refsource_Confirm x_refsource_confirm
https://github.com/netty/netty/security/advisories/GHSA-rgrr-p7gp-5xj7
Scores
CVSS v3
6.8
EPSS
0.0020
EPSS Percentile
9.7%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-93
Status
published
Products (7)
io.netty/netty-codec-redis
0 - 4.1.133.FinalMaven
io.netty/netty-codec-redis
4.2.0.Alpha1 - 4.2.13.FinalMaven
io.netty/netty-codec-redis
< 4.1.133.Final
io.netty/netty-codec-redis
>= 4.2.0.Alpha1, < 4.2.13.Final
netty/netty
< 4.1.133
netty/netty
< 4.1.133.Final
netty/netty
>= 4.2.0.Alpha1, < 4.2.13.Final
Published
May 13, 2026
Tracked Since
May 14, 2026