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VULNERABILITIES

CVE-2026-62380 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://github.com/netty/netty/security/advisories/GHSA-cc6x-ffm5-83wf [email protected]Vendor Advisory
https://www.vulncheck.com/advisories/netty-before-final-socks-proxy-null-byte-injection [email protected]Third Party Advisory

Weakness Enumeration

CWE-IDCWE NameSource
CWE-626Null Byte Interaction Error (Poison Null Byte)[email protected]

Affected Products

ProductVersions
netty netty
< 4.1.137
>= 4.2.0, < 4.2.17

CPE

  • cpe:2.3:a:netty:netty:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

4 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-62380
NVD Published Date:
Aug 22, 2026
NVD Last Modified:
Aug 27, 2026
Source:
[email protected]
CVE-2026-62380 Details - Not Deferred