VDB
CVE-2026-62380
CVE-2026-62380
PUBLISHED
CVSS 6.3 MEDIUM
Reported by VulnCheck · Published August 22, 2026
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.
Risk Scores
CVSS 4.0
6.3
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| netty | netty | 4.2.0.Final, 4.2.16.Final |
| netty | netty | 0, 4.1.137.Final |
| chainguard | keycloak-fips-26.7 | 0 |
| netty | netty | 4.2.0.Final, 4.2.16.Final, 0 |
Timeline
- Aug 22, 2026 Coalition ESS Score
- Aug 22, 2026 CVE Published
- Aug 23, 2026 EPSS Score
- Aug 24, 2026 EPSS Score
- Aug 26, 2026 CVE Updated
- Aug 27, 2026 EPSS Score
- Aug 28, 2026 EPSS Score
- Sep 3, 2026 Security Advisory
- Sep 5, 2026 EPSS Score
- Sep 9, 2026 EPSS Score
- Sep 15, 2026 EPSS Score
- Sep 17, 2026 EPSS Score
References
- GitHub Security Advisory (GHSA-cc6x-ffm5-83wf) vendor-advisory
- VulnCheck Advisory: Netty before 4.2.16.Final SOCKS Proxy Null Byte Injection third-party-advisory