CRLF injection in Netty - CVE-2026-41417

Vulnerability identifier: #VU130216

CSH Severity: Medium

CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-41417

CWE-ID: CWE-93

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to inject additional HTTP or RTSP requests.

The vulnerability exists due to improper neutralization of CRLF sequences in DefaultHttpRequest.setUri() and DefaultFullHttpRequest.setUri() when encoding attacker-controlled URIs into request lines through HttpRequestEncoder or RtspEncoder. A remote attacker can supply a specially crafted URI containing CRLF sequences to inject additional HTTP or RTSP requests.

Exploitation requires an application to create the request object first, later modify it through setUri(), and then serialize it with HttpRequestEncoder or RtspEncoder.

Netty
SUSE Linux Enterprise Server 15 SP6
SUSE Linux Enterprise Server 15 SP5
SUSE Linux Enterprise Server 15 SP4
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise High Performance Computing ESPOS 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise High Performance Computing LTSS 15
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise Desktop 15
SUSE Package Hub 15
Development Tools Module
IBM SPSS Analytic Server
IBM Watson Discovery for IBM Cloud Pak for Data
Rational Performance Tester
DevOps Test Performance
Storage Protect Server
IBM DB2
IBM App Connect for Manufacturing
netty-tcnative-debugsource
netty-tcnative
netty
netty-javadoc

Install security update from vendor's website.

Netty - addressed in versions 4.1.133, 4.2.13
IBM Watson Discovery for IBM Cloud Pak for Data - update to 5.3.2
DevOps Test Performance - update to 11.0.8
IBM DB2 - update to 11.5.9
netty-tcnative-debugsource - update to 2.0.77-150200.3.39.1
netty-tcnative - update to 2.0.77-150200.3.39.1
netty - update to 4.1.133-150200.4.46.1
netty-javadoc - update to 4.1.133-150200.4.46.1
Storage Protect Server - update to 8.2.2

• https://github.com/netty/netty/security/advisories/GHSA-v8h7-rr48-vmmv

• Multiple vulnerabilities in Netty
• IBM DevOps Test Performance update for Netty
• IBM Watson Discovery Cartridge update for Netty
• Multiple vulnerabilities in IBM SPSS Analytic Server
• SUSE update for netty, netty-tcnative
• IBM App Connect for Manufacturing update for Netty
• IBM Db2 update for Netty
• IBM Storage Protect Server update for Netty