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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👁 33 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: 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: 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: IBM SPSS Analytic Server is affected by multiple vulnerabilities in Netty
27 May 202605:11
–ibm
IBM Security Bulletins		Security Bulletin: IBM Maximo Application Suite - Monitor Component uses netty-codec-http2-4.2.10.Final.jar, netty-codec-http2-4.2.9.Final.jar which is vulnerable to CVE-2026-33871
29 May 202608:50
–ibm
ATTACKERKB		CVE-2026-33871
27 Mar 202619:55
–attackerkb
Atlassian		DoS (Denial of Service) io.netty:netty-codec-http2 Dependency in Bamboo Data Center
14 Apr 202622:29
–atlassian
Atlassian		DoS (Denial of Service) io.netty:netty-codec-http2 Dependency in Confluence Data Center
10 Apr 202622:29
–atlassian
Rows per page
Vulners
Node
io.nettynetty-codec-http2Range4.2.0.Alpha1–4.2.10.Finalmaven
OR
io.nettynetty-codec-http2Range<4.1.132.Finalmaven

Data

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27 Mar 2026 21:48Current
5.9Medium risk
Vulners AI Score5.9
CVSS 3.17.5
CVSS 48.7
EPSS0.00038
SSVC
CWE-770
NettyContinuation framesFrame readerDenial of serviceZero byte frames
33