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Netty HTTP/2 CONTINUATION Frame Flood DoS via Zero-Byte Frame Bypass

🗓️ 26 Mar 2026 18:49:21Reported by GitHub Advisory DatabaseType 
github
 github🔗 github.com👁 35 Views

Remote attacker causes denial of service by flooding continuation frames; zero byte frames bypass checks.

Related
Detection
Refs
ReporterTitlePublishedViews
Family
IBM Security Bulletins		Security Bulletin: IBM Enterprise Build of Quarkus is affected by multiple vulnerabilities
15 Apr 202615:10
–ibm
IBM Security Bulletins		Security Bulletin: Multiple security vulnerabilities are addressed with IBM Process Mining Interim Fix for April 2026
30 Apr 202611:49
–ibm
IBM Security Bulletins		Security Bulletin: Multiple Vulnerabilities affect IBM Decision Optimization for Cloud Pak for Data.
5 Jun 202610:12
–ibm
IBM Security Bulletins		Security Bulletin: IBM Instana Observability is affected by multiple vulnerabilities within Instana Agent container image
27 May 202606:40
–ibm
IBM Security Bulletins		Security Bulletin: There is a vulnerability in netty-codec-http2-4.1.130.Final.jar used by IBM Maximo Manage application in IBM Maximo Application Suite (CVE-2026-33871)
29 May 202609:03
–ibm
IBM Security Bulletins		Security Bulletin: DataStage on Cloud Pak for Data has several vulnerabilities due to open source software
22 Jun 202614:26
–ibm
IBM Security Bulletins		Security Bulletin: IBM® Db2® federated server is affected by multiple vulnerabilities in Netty open source libraries.
23 Jun 202619:50
–ibm
IBM Security Bulletins		Security Bulletin: IBM Watson Discovery Cartridge affected by vulnerability in netty-codec-http2-4.1.129.Final.jar
29 Apr 202617:55
–ibm
IBM Security Bulletins		Security Bulletin: Vulnerability in Netty affects IBM watsonx Assistant Cartridge and IBM watsonx Orchestrate with watsonx Assistant Cartridge.
22 Jun 202613:20
–ibm
IBM Security Bulletins		Security Bulletin: IBM SPSS Analytic Server is affected by multiple vulnerabilities in Netty
27 May 202605:11
–ibm
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Vulners
Node
io.nettynetty-codec-http2Range4.2.0.Alpha1–4.2.10.Finalmaven
OR
io.nettynetty-codec-http2Range<4.1.132.Finalmaven

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27 Mar 2026 21:48Current
5.9Medium risk
Vulners AI Score5.9
CVSS 3.17.5
CVSS 48.7
EPSS0.0065
SSVC
CWE-770
NettyContinuation framesFrame readerDenial of serviceZero byte frames
35