Missing Release of Resource after Effective Lifetime in Netty - CVE-2026-48043

Vulnerability identifier: #VU133441

CSH Severity: Medium

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

CVE-ID: CVE-2026-48043

CWE-ID: CWE-772

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 a reference-count leak in DelegatingDecompressorFrameListener when processing HTTP/2 frames that cause the flow-controller to throw. A remote attacker can send crafted frames to cause a denial of service.

The issue may exhaust memory and eventually take down the JVM due to an out-of-memory error.

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 LTSS 15
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise High Performance Computing ESPOS 15
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise Desktop 15
SUSE Package Hub 15
Development Tools Module
Netezza Appliance
webMethods developer portal
webMethods ControlPlane
IBM SPSS Analytic Server
Jira Service Management Data Center
Crowd Data Center
IBM Sterling B2B Integrator
Confluence Data Center
IBM Maximo Application Suite - Manage Component
Bitbucket Data Center
Jira Software Data Center
Rational Test Automation Server
Red Hat build of Quarkus
IBM Sterling File Gateway
netty-tcnative
netty-tcnative-debugsource
netty
netty-javadoc
Red Hat Camel for Spring Boot
JBoss Data Grid

Install security update from vendor's website.

Netty - addressed in versions 4.1.135, 4.2.15
Netezza Appliance - update to 1.0.2.0
Jira Service Management Data Center - addressed in versions 10.3.24, 11.3.8
IBM Sterling File Gateway - addressed in versions 6.2.1.2.1, 6.2.2.1.1
Crowd Data Center - update to 7.2.2
IBM Sterling B2B Integrator - addressed in versions 6.2.1.2.1, 6.2.2.1.1
Confluence Data Center - addressed in versions 9.2.24, 10.2.17
IBM Maximo Application Suite - Manage Component - addressed in versions 9.0.28, 9.1.20, 9.2.1
Bitbucket Data Center - addressed in versions 9.4.22, 10.2.5, 10.3.2
Jira Software Data Center - addressed in versions 9.12.28, 10.3.24, 11.3.8
Rational Test Automation Server - update to 11.0.9
webMethods developer portal - update to 11.1 Fix14
webMethods ControlPlane - update to 11.1 Fix11
netty-tcnative - update to 2.0.79-150200.3.45.1
netty-tcnative-debugsource - update to 2.0.79-150200.3.45.1
netty - update to 4.1.135-150200.4.50.1
netty-javadoc - update to 4.1.135-150200.4.50.1
Red Hat build of Quarkus - addressed in versions 3.27.4.SP1, 3.33.2.SP1
Red Hat Camel for Spring Boot - update to 4.18
JBoss Data Grid - update to 8.6.2

• https://github.com/netty/netty/security/advisories/GHSA-c2gf-v879-257j

• Multiple vulnerabilities in Netty
• Multiple vulnerabilities in IBM SPSS Analytic Server
• SUSE update for netty, netty-tcnative
• Multiple vulnerabilities in Bitbucket Data Center
• Multiple vulnerabilities in IBM Maximo Application Suite - Manage Component
• Multiple vulnerabilities in Red Hat Camel for Spring Boot 4
• Multiple vulnerabilities in IBM Netezza Appliance
• Multiple vulnerabilities in JBoss Data Grid 8.6
• Multiple vulnerabilities in Crowd Data Center
• Multiple vulnerabilities in Jira Service Management Data Center
• Multiple vulnerabilities in Jira Software Data Center
• Multiple vulnerabilities in IBM webMethods API Management
• Multiple vulnerabilities in IBM Sterling B2B Integrator and IBM Sterling File Gateway
• Multiple vulnerabilities in Confluence Data Center
• Multiple vulnerabilities in Red Hat build of Quarkus 3.33.2
• Multiple vulnerabilities in Red Hat build of Quarkus 3.27.4
• Multiple vulnerabilities in IBM Rational Test Automation Server