{"id":"RHLW-2026-ebef76b1d44dd738","summary":"Lightwell Security Advisory: netty-codec-http3 4.2.13.Final-rhlw-00001","details":"Red Hat Lightwell has released io.netty:netty-codec-http3 4.2.13.Final-rhlw-00001 with backported fixes for CVE-2026-44892, CVE-2026-48748, and CVE-2026-56816.\n\nCVE-2026-44892: Netty has a Vulnerable Default Configuration Which Leads to Denial of Service via Unbounded HTTP/3 Header Size\n\nCVE-2026-48748: Netty HTTP/3 QPACK Blocked Streams Memory Exhaustion\n\nCVE-2026-56816: Netty: Memory Exhaustion via HTTP/3 Reserved Frame Types\n\nThis patched artifact is a drop-in replacement for io.netty:netty-codec-http3 4.2.13.Final-rhlw-00001 from Maven Central.","modified":"2026-11-06T19:43:10.519147666Z","published":"2026-11-06T08:56:08Z","upstream":["CVE-2026-44892","CVE-2026-48748","CVE-2026-56816","GHSA-4grm-h2qv-h6w6","GHSA-c2rx-5r8w-8xr2","GHSA-hpcc-26xq-25fv"],"references":[{"type":"WEB","url":"https://github.com/netty/netty/releases/tag/netty-4.2.15.Final"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44892.json"},{"type":"ADVISORY","url":"https://github.com/netty/netty/security/advisories/GHSA-c2rx-5r8w-8xr2"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-44892"},{"type":"ADVISORY","url":"https://github.com/advisories/GHSA-c2rx-5r8w-8xr2"},{"type":"WEB","url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-48748.json"},{"type":"ADVISORY","url":"https://access.redhat.com/security/cve/CVE-2026-48748"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/48xxx/CVE-2026-48748.json"},{"type":"ADVISORY","url":"https://github.com/netty/netty/security/advisories/GHSA-4grm-h2qv-h6w6"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-48748"},{"type":"FIX","url":"https://github.com/netty/netty/commit/75127cab731ee35068d1f0667bffa188bc332f5d"},{"type":"ADVISORY","url":"https://github.com/advisories/GHSA-4grm-h2qv-h6w6"},{"type":"WEB","url":"https://github.com/netty/netty/releases/tag/netty-4.2.16.Final"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/56xxx/CVE-2026-56816.json"},{"type":"ADVISORY","url":"https://github.com/netty/netty/security/advisories/GHSA-hpcc-26xq-25fv"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-56816"},{"type":"FIX","url":"https://github.com/netty/netty/commit/5b68c61f37aa4a3045cba624cbea239655c9003b"},{"type":"ADVISORY","url":"https://github.com/advisories/GHSA-hpcc-26xq-25fv"}],"affected":[{"package":{"name":"io.netty:netty-codec-http3","ecosystem":"Red Hat Lightwell:Maven","purl":"pkg:maven/io.netty/netty-codec-http3"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.2.13.Final-rhlw-00001"}]}],"versions":["4.2.10.Final","4.2.11.Final","4.2.12.Final","4.2.13.Final","4.2.2.Final","4.2.3.Final","4.2.4.Final","4.2.5.Final","4.2.6.Final","4.2.7.Final","4.2.8.Final","4.2.9.Final"],"database_specific":{"lightwell":{"remediated_version":"4.2.13.Final-rhlw-00001","repository_url":"https://packages.redhat.com/lightwell/java/remediated/","backport_base_version":"4.2.13.Final"},"source":"https://github.com/project-lightwell/lightwell-osv/blob/main/advisories/RHLW-2026-ebef76b1d44dd738.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:H"}],"credits":[{"name":"Red Hat Lightwell","type":"REMEDIATION_DEVELOPER"}]}