Netty up to 4.2.13.Final client resource consumption

Summaryinfo

A vulnerability, which was classified as problematic, was found in Netty. This affects an unknown function of the component client Handler. The manipulation results in resource consumption. This vulnerability is cataloged as CVE-2026-44892. The attack may be launched remotely. There is no exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Netty. It has been classified as problematic. Affected is some unknown functionality of the component client Handler. The manipulation with an unknown input leads to a resource consumption vulnerability. CWE is classifying the issue as CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. This is going to have an impact on availability. CVE summarizes:

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.

The advisory is available at github.com. This vulnerability is traded as CVE-2026-44892 since 05/07/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1499 by the MITRE ATT&CK project.

Upgrading to version 4.2.15.Final eliminates this vulnerability. The upgrade is hosted for download at github.com.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Name

• Netty

Version

• 0.0.11.Final
• 0.0.13.Final
• 0.0.21.Final
• 0.0.22.Final
• 0.0.71.Final
• 0.8.16
• 0.9.3
• 0.9.4
• 0.9.5
• 1.0.24
• 1.0.39
• 1.0.49
• 1.0.52
• 1.1
• 1.1.12
• 1.1.13
• 1.1.31
• 1.1.32
• 1.1.35
• 1.1.36
• 1.2.7
• 1.2.8
• 1.2.17
• 1.2.18
• 1.3.0-M4
• 1.3.0-M5
• 1.3.5
• 1.3.6
• 1.1000
• 3.6.0
• 3.6.1
• 3.6.2
• 3.6.3
• 3.6.4
• 3.6.5
• 3.6.6
• 3.6.7
• 3.6.8
• 3.7.0
• 3.8.0
• 3.8.1
• 3.9.0
• 3.9.1
• 3.9.1.1
• 3.10.3
• 4.0.0
• 4.0.1
• 4.0.2
• 4.0.3
• 4.0.4
• 4.0.5
• 4.0.6
• 4.0.7
• 4.0.8
• 4.0.9
• 4.0.10
• 4.0.11
• 4.0.12
• 4.0.13
• 4.0.14
• 4.0.15
• 4.0.16
• 4.0.17
• 4.0.18
• 4.0.28
• 4.0.37.Final
• 4.1
• 4.1.0.BEta4
• 4.1.1
• 4.1.1.Final
• 4.1.7.1.Final
• 4.1.42.Final
• 4.1.43.Final
• 4.1.44
• 4.1.59.Final
• 4.1.60.Final
• 4.1.61.Final
• 4.1.68.Final
• 4.1.77.Final
• 4.1.86.Final
• 4.1.94.Final
• 4.1.108.Final
• 4.1.115
• 4.1.118.Final
• 4.1.124.Final
• 4.1.125.Final
• 4.1.128.Final
• 4.1.129.Final
• 4.1.132.Final
• 4.1.133.Final
• 4.1.135.Final
• 4.2.4.Final
• 4.2.5.Final
• 4.2.7.Final
• 4.2.8.Final
• 4.2.10.Final
• 4.2.12.Final
• 4.2.13.Final

Website

• Product: https://github.com/netty/netty/

CPE 2.3info

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Entryinfo

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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