{"id":"RHLW-2026-48b9709ba25473be","summary":"Lightwell Security Advisory: netty-codec-mqtt 4.1.100.Final-rhlw-00001","details":"Red Hat Lightwell has released io.netty:netty-codec-mqtt 4.1.100.Final-rhlw-00001 with a backported security fix.\n\nCVE-2026-44248: Netty: Resource exhaustion in MqttDecoder\n\nThis patched artifact is a drop-in replacement for io.netty:netty-codec-mqtt 4.1.100.Final from Maven Central.","modified":"2026-10-22T00:08:31.971188719Z","published":"2026-10-09T20:36:23Z","upstream":["CVE-2026-44248","GHSA-jfg9-48mv-9qgx"],"references":[{"type":"WEB","url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44248.json"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:37390"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:41951"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:66488"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:66545"},{"type":"ADVISORY","url":"https://access.redhat.com/security/cve/CVE-2026-44248"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44248.json"},{"type":"ADVISORY","url":"https://github.com/netty/netty/security/advisories/GHSA-jfg9-48mv-9qgx"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-44248"},{"type":"ADVISORY","url":"https://github.com/advisories/GHSA-jfg9-48mv-9qgx"}],"affected":[{"package":{"name":"io.netty:netty-codec-mqtt","ecosystem":"Red Hat Lightwell:Maven","purl":"pkg:maven/io.netty/netty-codec-mqtt"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.1.100.Final-rhlw-00001"}]}],"versions":["4.1.0.Beta1","4.1.0.Beta2","4.1.0.Beta3","4.1.0.Beta4","4.1.0.Beta5","4.1.0.Beta6","4.1.0.Beta7","4.1.0.Beta8","4.1.0.CR1","4.1.0.CR2","4.1.0.CR3","4.1.0.CR4","4.1.0.CR5","4.1.0.CR6","4.1.0.CR7","4.1.0.Final","4.1.1.Final","4.1.10.Final","4.1.100.Final","4.1.11.Final","4.1.12.Final","4.1.13.Final","4.1.14.Final","4.1.15.Final","4.1.16.Final","4.1.17.Final","4.1.18.Final","4.1.19.Final","4.1.2.Final","4.1.20.Final","4.1.21.Final","4.1.22.Final","4.1.23.Final","4.1.24.Final","4.1.25.Final","4.1.26.Final","4.1.27.Final","4.1.28.Final","4.1.29.Final","4.1.3.Final","4.1.30.Final","4.1.31.Final","4.1.32.Final","4.1.33.Final","4.1.34.Final","4.1.35.Final","4.1.36.Final","4.1.37.Final","4.1.38.Final","4.1.39.Final","4.1.4.Final","4.1.40.Final","4.1.41.Final","4.1.42.Final","4.1.43.Final","4.1.44.Final","4.1.45.Final","4.1.46.Final","4.1.47.Final","4.1.48.Final","4.1.49.Final","4.1.5.Final","4.1.50.Final","4.1.51.Final","4.1.52.Final","4.1.53.Final","4.1.54.Final","4.1.55.Final","4.1.56.Final","4.1.57.Final","4.1.58.Final","4.1.59.Final","4.1.6.Final","4.1.60.Final","4.1.61.Final","4.1.62.Final","4.1.63.Final","4.1.64.Final","4.1.65.Final","4.1.66.Final","4.1.67.Final","4.1.68.Final","4.1.69.Final","4.1.7.Final","4.1.70.Final","4.1.71.Final","4.1.72.Final","4.1.73.Final","4.1.74.Final","4.1.75.Final","4.1.76.Final","4.1.77.Final","4.1.78.Final","4.1.79.Final","4.1.8.Final","4.1.80.Final","4.1.81.Final","4.1.82.Final","4.1.83.Final","4.1.84.Final","4.1.85.Final","4.1.86.Final","4.1.87.Final","4.1.88.Final","4.1.89.Final","4.1.9.Final","4.1.90.Final","4.1.91.Final","4.1.92.Final","4.1.93.Final","4.1.94.Final","4.1.95.Final","4.1.96.Final","4.1.97.Final","4.1.98.Final","4.1.99.Final"],"database_specific":{"lightwell":{"remediated_version":"4.1.100.Final-rhlw-00001","repository_url":"https://packages.redhat.com/lightwell/java/remediated/","backport_base_version":"4.1.100.Final"},"source":"https://github.com/project-lightwell/lightwell-osv/blob/main/advisories/RHLW-2026-48b9709ba25473be.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"}],"credits":[{"name":"Red Hat Lightwell","type":"REMEDIATION_DEVELOPER"}]}