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.
Metrics
CVSS 3.1 7.1/10
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:NWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| netty | netty | >= 4.2.0.Alpha1, < 4.2.13.Final; < 4.1.133.Final |
| io.netty | netty-codec-redis | >= 4.2.0.Alpha1, < 4.2.13.Final; < 4.1.133.Final |
References
- https://github.com/netty/netty/security/advisories/GHSA-rgrr-p7gp-5xj7Exploit, Mitigation, Vendor Advisory
- https://github.com/netty/netty/security/advisories/GHSA-rgrr-p7gp-5xj7Exploit, Mitigation, Vendor Advisory
Timeline
- Published
- May 13, 2026
- Last modified
- Oct 26, 2026
- NVD status
- Analyzed