Vulnerability Description
Netty (io.netty:netty-codec-socks) versions 4.2.0.Final through 4.2.16.Final and 4.1.x through 4.1.136.Final contain null byte, CRLF, and credential injection vulnerabilities in the SOCKS4 (Socks4ClientEncoder) and SOCKS5 (Socks5ClientEncoder) client encoders, which fail to validate domain address and authentication (username/password) fields. An attacker able to control these fields can inject null bytes or CRLF characters to truncate or alter values, potentially enabling domain spoofing, SOCKS4 userid truncation, authentication data injection, and protocol confusion. Fixed in 4.2.17.Final and 4.1.137.Final.
Related Weaknesses (CWE)
References
- https://github.com/netty/netty/security/advisories/GHSA-cc6x-ffm5-83wf
- https://www.vulncheck.com/advisories/netty-before-final-socks-proxy-null-byte-in
FAQ
What is CVE-2026-62380?
CVE-2026-62380 is a documented vulnerability. Netty (io.netty:netty-codec-socks) versions 4.2.0.Final through 4.2.16.Final and 4.1.x through 4.1.136.Final contain null byte, CRLF, and credential injection vulnerabilities in the SOCKS4 (Socks4Clie...
How severe is CVE-2026-62380?
CVSS scoring is not yet available for CVE-2026-62380. Check NVD for updates.
Is there a patch for CVE-2026-62380?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.