Bug 2521308 (CVE-2026-62380) - CVE-2026-62380 io.netty/netty-codec-socks: Netty: Null byte and CRLF injection in SOCKS client encoders can lead to domain spoofing
Summary: CVE-2026-62380 io.netty/netty-codec-socks: Netty: Null byte and CRLF injectio...
Keywords:
Status: NEW
Alias: CVE-2026-62380
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2526290
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-08-22 12:52 UTC by OSIDB Bzimport
Modified: 2026-08-31 13:30 UTC (History)
96 users (show)

Fixed In Version:
Clone Of:
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Description OSIDB Bzimport 2026-08-22 12:52:00 UTC 
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.
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