Feed/CVE-2026-56817
CVE-2026-56817HIGHCVSS 0.0

CVE-2026-56817

Published Jul 21, 2026·Updated Jul 22, 2026

NVD Description

Netty is a network application framework for development of protocol servers and clients. In versions 4.2.0.Final through 4.2.15.Final and 4.1.0.Final through 4.1.135.Final, any caller that can deliver bytes to a Netty channel pipeline containing `XmlDecoder` can send XML with a `DOCTYPE` declaration to an `AsyncXMLInputFactory` instantiated with no security configuration, leaving DTD and entity handling active depending on Aalto XML async parser behavior and creating conditional XML external entity risk. This issue is fixed in versions 4.1.136.Final and 4.2.16.Final.

Affected Packages (1)

io.netty:netty-codec-xmlMAVEN
From 4.2.0.Final
Fixed in = 4.2.15.Final

References

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