CVE-2026-44892

Netty is a network application framework for development of protocol servers and clients. Prior to version 4.2.15.Final, the default configuration of the `Http3ConnectionHandler` in the Netty HTTP/3 codec lacks an enforced maximum header size limit. When a peer does not explicitly specify `HTTP3_SETTINGS_MAX_FIELD_SECTION_SIZE`, the implementation defaults to an unbounded limit. This insecure default configuration allows a malicious client or server to send an enormous number of headers, leading to a memory exhaustion Denial of Service via an `OutOfMemoryError`. Version 4.2.15.Final contains a patch.

• CWE-400
• CWE-1188

• https://github.com/netty/netty/releases/tag/netty-4.2.15.FinalRelease Notes
• https://github.com/netty/netty/security/advisories/GHSA-c2rx-5r8w-8xr2Vendor Advisory

Published

Jun 12, 2026

Last Modified

Jun 17, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2026-44887Pi.Alert is a WIFI / LAN intruder detector with web service …9.8
• CVE-2026-44888Pi.Alert is a WIFI / LAN intruder detector with web service …9.8
• CVE-2026-44889WebOb provides objects for HTTP requests and responses. Prio…6.1
• CVE-2026-4489A vulnerability was detected in Tenda A18 Pro 02.03.02.28. T…8.8
• CVE-2026-44890Netty is a network application framework for development of …7.5
• CVE-2026-44891Netty is a network application framework for development of …7.5
• CVE-2026-44893Netty is a network application framework for development of …7.5
• CVE-2026-44894Netty is a network application framework for development of …7.5
• CVE-2026-44895GitLab MCP Server lets an AI agent talk directly to GitLab. …9.2
• CVE-2026-44896Mistune is a Python Markdown parser with renderers and plugi…6.1
• CVE-2026-44897Mistune is a Python Markdown parser with renderers and plugi…6.1
• CVE-2026-44898Mistune is a Python Markdown parser with renderers and plugi…6.1