🛡️ CVE-2026-42586
🟡 CVSS 6.8 — Medium ✅ No Known Exploit CWE-93 NVD
6.8
CVSS Score
0 Low4 Medium7 High9 Critical10

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.

Details

Severity Medium
CVSS Score 6.8
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N
CWE CWE-93
Public Exploit ✅ No
Source NVD
Published 2026-05-07
Updated 2026-06-15
Modified 2026-05-14
Fix URL N/A

Affected Packages

Software From version Fixed in
io.netty:netty-codec-redis — 4.1.133.Final
netty 4.2.0 4.2.13
unknown — —

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