Red Hat Lightwell has released io.netty:netty-codec-mqtt 4.1.100.Final-rhlw-00001 with a backported security fix.
CVE-2026-44248: Netty: Resource exhaustion in MqttDecoder
This patched artifact is a drop-in replacement for io.netty:netty-codec-mqtt 4.1.100.Final from Maven Central.
{
"backport_base_version": "4.1.100.Final",
"remediated_version": "4.1.100.Final-rhlw-00001",
"repository_url": "https://packages.redhat.com/lightwell/java/remediated/"
}
"https://github.com/project-lightwell/lightwell-osv/blob/main/advisories/RHLW-2026-48b9709ba25473be.json"