Resource exhaustion in Netty - CVE-2026-42587

Vulnerability identifier: #VU130215

CSH Severity: Medium

CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-42587

CWE-ID: CWE-400

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to uncontrolled resource consumption in HttpContentDecompressor and DelegatingDecompressorFrameListener when processing compressed HTTP request bodies with Content-Encoding set to br, zstd, or snappy. A remote attacker can send a specially crafted compressed payload to cause a denial of service.

The configured maxAllocation limit is enforced for gzip and deflate, but is silently ignored for brotli, zstd, and snappy. The issue affects both HTTP/1.1 and HTTP/2 handling.

Netty
SUSE Linux Enterprise Server 15 SP6
SUSE Linux Enterprise Server 15 SP5
SUSE Linux Enterprise Server 15 SP4
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise High Performance Computing 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
Rational Test Virtualization Server
IBM SPSS Analytic Server
Jira Service Management Data Center
Crowd Data Center
Confluence Data Center
Jira Software Data Center
Bamboo Data Center
Red Hat OpenShift Dev Spaces
Red Hat Integration Camel Extensions for Quarkus
IBM Decision Optimization for Cloud Pak for Data
DataStax Hyper-Converged Database
Enterprise Build of Quarkus
Storage Scale
DataStage on Cloud Pak for Data
Maximo Application Suite - Monitor Component
Rational Performance Tester
DevOps Test Virtualization
DevOps Test Integrations and APIs
DevOps Test Performance
webMethods developer portal
webMethods ControlPlane
Storage Protect Server
IBM DB2
netty-tcnative-debugsource
netty-tcnative
netty
netty-javadoc
JBoss Data Grid

Install security update from vendor's website.

Netty - addressed in versions 4.1.133, 4.2.13
DataStax Hyper-Converged Database - update to 1.2.7
Enterprise Build of Quarkus - update to 3.27.4
Storage Scale - addressed in versions 5.2.3.10, 6.0.1.1
DataStage on Cloud Pak for Data - addressed in versions 5.3.1 patch 9, 5.4.0.0 patch 4
Jira Service Management Data Center - addressed in versions 10.3.22, 11.3.7
Crowd Data Center - update to 7.2.1
Confluence Data Center - addressed in versions 9.2.21, 10.2.13
Maximo Application Suite - Monitor Component - addressed in versions 9.0.23, 9.1.13, 9.2.1
Jira Software Data Center - addressed in versions 9.12.38, 10.3.22, 11.3.7
Bamboo Data Center - addressed in versions 10.2.20, 12.1.8
DevOps Test Virtualization - update to 12.0.0
DevOps Test Integrations and APIs - update to 12.0.0
DevOps Test Performance - update to 11.0.8
webMethods developer portal - update to 11.1 Fix14
webMethods ControlPlane - update to 11.1 Fix11
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
Red Hat OpenShift Dev Spaces - update to 3.28.2
Red Hat Integration Camel Extensions for Quarkus - update to 3.33.2
IBM Decision Optimization for Cloud Pak for Data - update to 5.3.1 patch 6
Storage Protect Server - update to 8.2.2
JBoss Data Grid - update to 8.6.2

• https://github.com/netty/netty/security/advisories/GHSA-f6hv-jmp6-3vwv

• Multiple vulnerabilities in Netty
• Multiple vulnerabilities in IBM DevOps Test Performance
• Multiple vulnerabilities in IBM SPSS Analytic Server
• SUSE update for netty, netty-tcnative
• Multiple vulnerabilities in Red Hat Integration Camel Extensions for Quarkus 3.33
• Multiple vulnerabilities in IBM Enterprise Build of Quarkus
• Multiple vulnerabilities in Bamboo Data Center
• Multiple vulnerabilities in Confluence Data Center
• Multiple vulnerabilities in Crowd Data Center
• Multiple vulnerabilities in Jira Service Management Data Center and Jira Service Management Server
• Multiple vulnerabilities in IBM Decision Optimization for Cloud Pak for Data
• Multiple vulnerabilities in IBM Db2
• Multiple vulnerabilities in Red Hat OpenShift Dev Spaces 3.28
• Multiple vulnerabilities in IBM Storage Protect Server
• Multiple vulnerabilities in IBM Maximo Application Suite - Monitor Component
• Multiple vulnerabilities in JBoss Data Grid 8.6
• Multiple vulnerabilities in Jira Software Data Center
• Multiple vulnerabilities in IBM webMethods API Management
• Multiple vulnerabilities in IBM DataStage on Cloud Pak for Data
• Multiple vulnerabilities in IBM Storage Scale
• Multiple vulnerabilities in IBM DataStax Hyper-Converged Database
• Multiple vulnerabilities in IBM DevOps Test Virtualization/IBM DevOps Test Integrations and APIs