Red Hat Lightwell has released io.netty:netty-handler 4.1.100.Final-rhlw-00001 with backported fixes for CVE-2025-24970, CVE-2026-44249, CVE-2026-45416, CVE-2026-50010, CVE-2026-75595, and CVE-2026-75596.
CVE-2025-24970: SslHandler doesn't correctly validate packets which can lead to native crash when using native SSLEngine
CVE-2026-44249: Netty has an IPv6 Subnet Filter Bypass via Incorrect Comparator Masking
CVE-2026-45416: Netty: SNI handler pre-allocates up to 16 MiB from nine attacker bytes
CVE-2026-50010: Netty's wrapping plain trust manager silently disables hostname verification
CVE-2026-75595: Netty: SNI Routing Bypass via Fragmented TLS ClientHello Causing Fallback to Default SslContext
CVE-2026-75596: Netty: Fragmented ClientHello records trigger quadratic pre-handshake reassembly in default SNI parsing
This patched artifact is a drop-in replacement for io.netty:netty-handler 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-2026-313117b0cad7329e.json"