This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page. View CVE-2026-73507 →

DEBIAN-CVE-2026-73507

Netty is an asynchronous, event-driven network application framework. Prior to 4.1.136.Final and 4.2.16.Final, io.netty.handler.codec.xml.XmlFrameDeco...

Original description

The description as published by the source.

Netty is an asynchronous, event-driven network application framework. Prior to 4.1.136.Final and 4.2.16.Final, io.netty.handler.codec.xml.XmlFrameDecoder.decode() failed to preserve closing-tag parser state across invocations, so an unauthenticated remote attacker could trickle-feed repeated </ sequences that repeatedly rescanned the accumulated buffer and exhausted an EventLoop thread's CPU, causing denial of service with a maxFrameLength of 1 MB. This issue is fixed in versions 4.1.136.Final and 4.2.16.Final.

Source: OSV.dev (Open Source Vulnerabilities) OSV

Affected packages

Debian:12 netty

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Debian:13 netty

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Debian:14 netty

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

References

advisory security-tracker.debian.org