Copyright © 2012 Red Hat, Inc. All rights reserved. Moderate 2026-05-13T18:20:46 netty-codec-redis: Netty: Command injection via CRLF characters in Redis codec encoder 6.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N CWE-93

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.

A flaw was found in Netty, an asynchronous, event-driven network application framework. The Netty Redis codec encoder (RedisEncoder) does not properly validate or sanitize user-controlled string content for CRLF (Carriage Return Line Feed) characters. A remote attacker, by controlling the content of a Redis message, can inject arbitrary Redis commands or forge fake responses. This can lead to a high impact on data integrity.

Red Hat build of Apache Camel for Spring Boot 4 Affected netty-codec-redis Red Hat Data Grid 8 Affected netty-codec-redis Red Hat Fuse 7 Out of support scope netty-codec-redis Red Hat JBoss Enterprise Application Platform 7 Not affected netty-codec-redis Red Hat JBoss Enterprise Application Platform Expansion Pack Not affected netty-codec-redis Red Hat Process Automation 7 Affected netty-codec-redis Red Hat Single Sign-On 7 Will not fix netty-codec-redis https://www.cve.org/CVERecord?id=CVE-2026-42586 https://nvd.nist.gov/vuln/detail/CVE-2026-42586 https://github.com/netty/netty/security/advisories/GHSA-rgrr-p7gp-5xj7