CVE-2026-48748 Netty HTTP/3 QPACK Blocked Streams Memory Exhaustion

Netty is a network application framework for development of protocol servers and clients. Prior to version 4.2.15.Final, a memory exhaustion vulnerability in the Netty HTTP/3 codec allows the creation of an infinite number of blocked streams, which can cause OOM error. Version 4.2.15.Final patche...

CVE-2026-48748

Netty HTTP/3 vulnerability CVE-2026-48748: a memory-exhaustion flaw in the Netty HTTP/3 codec prior to 4.2.15.Final allows an infinite number of blocked streams, leading to OOM. The issue is fixed in Netty version 4.2.15.Final. Affected component: Netty’s HTTP/3 codec. Root cause: unbounded block...

PT-2026-48900

Netty is a network application framework for development of protocol servers and clients. Prior to version 4.2.15.Final, a memory exhaustion vulnerability in the Netty HTTP/3 codec allows the creation of an infinite number of blocked streams, which can cause OOM error. Version 4.2.15.Final patche...