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DoS (Denial of Service) io.netty:netty-codec-http2 Dependency in Confluence Data Center

🗓️ 10 Apr 2026 22:29:06Reported by security-metrics-botType 
atlassian
 atlassian🔗 jira.atlassian.com👁 17 Views

High severity denial of service in Netty HTTP/2 affects Confluence Data Center; upgrade to fixed versions or latest release.

Related
Detection
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
Tenable Nessus		Atlassian Bamboo 9.6.x < 9.6.25 / 10.x < 10.2.18 / 11.x < 12.1.6 Multiple Vulnerabilities
1 May 202600:00
–nessus
Rows per page
Vulners
Node
atlassianconfluence_data_centerMatch8.9.0
OR
atlassianconfluence_data_centerMatch8.9.1
OR
atlassianconfluence_data_centerMatch8.9.2
OR
atlassianconfluence_data_centerMatch8.9.3
OR
atlassianconfluence_data_centerMatch8.9.4
OR
atlassianconfluence_data_centerMatch9.1.0
OR
atlassianconfluence_data_centerMatch9.0.1
OR
atlassianconfluence_data_centerMatch8.9.5
OR
atlassianconfluence_data_centerMatch9.0.2
OR
atlassianconfluence_data_centerMatch9.0.3
OR
atlassianconfluence_data_centerMatch8.9.6
OR
atlassianconfluence_data_centerMatch8.9.7
OR
atlassianconfluence_data_centerMatch9.1.1
OR
atlassianconfluence_data_centerMatch8.9.8
OR
atlassianconfluence_data_centerMatch9.2.0
OR
atlassianconfluence_data_centerMatch9.2.1
OR
atlassianconfluence_data_centerMatch9.4.0
OR
atlassianconfluence_data_centerMatch9.3.1
OR
atlassianconfluence_data_centerMatch9.2.2
OR
atlassianconfluence_data_centerMatch9.3.2
OR
atlassianconfluence_data_centerMatch9.2.3
OR
atlassianconfluence_data_centerMatch9.4.1
OR
atlassianconfluence_data_centerMatch9.2.4
OR
atlassianconfluence_data_centerMatch9.2.5
OR
atlassianconfluence_data_centerMatch9.2.6
OR
atlassianconfluence_data_centerMatch9.5.1
OR
atlassianconfluence_data_centerMatch9.5.2
OR
atlassianconfluence_data_centerMatch9.5.3
OR
atlassianconfluence_data_centerMatch9.2.7
OR
atlassianconfluence_data_centerMatch10.1.0
OR
atlassianconfluence_data_centerMatch9.2.8
OR
atlassianconfluence_data_centerMatch10.0.2
OR
atlassianconfluence_data_centerMatch10.0.3
OR
atlassianconfluence_data_centerMatch9.5.4
OR
atlassianconfluence_data_centerMatch9.2.9
OR
atlassianconfluence_data_centerMatch10.1.1
OR
atlassianconfluence_data_centerMatch10.2.0
OR
atlassianconfluence_data_centerMatch9.2.10
OR
atlassianconfluence_data_centerMatch10.1.2
OR
atlassianconfluence_data_centerMatch9.2.11
OR
atlassianconfluence_data_centerMatch9.2.12
OR
atlassianconfluence_data_centerMatch10.2.1
OR
atlassianconfluence_data_centerMatch9.2.13
OR
atlassianconfluence_data_centerMatch10.2.2
OR
atlassianconfluence_data_centerMatch9.2.14
OR
atlassianconfluence_data_centerMatch10.2.3
OR
atlassianconfluence_data_centerMatch9.2.15
OR
atlassianconfluence_data_centerMatch10.2.6
OR
atlassianconfluence_data_centerMatch9.2.17
OR
atlassianconfluence_data_centerMatch10.2.7
OR
atlassianconfluence_data_centerMatch9.2.19
OR
atlassianconfluence_data_centerMatch10.2.10

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21 Apr 2026 17:00Current
5.8Medium risk
Vulners AI Score5.8
CVSS 3.17.5
CVSS 48.7
EPSS0.00037
SSVC
NettyDenial of serviceConfluence Data CenterHigh severityFixed versionsUpgrade advised
17