CVE-2026-93491 — Io.netty/netty-codec-http: netty: denial of service via unbounded httpservercodec http/1.1 pipeline queue
A flaw was found in Netty's HttpServerCodec. A remote, unauthenticated attacker can exploit this vulnerability by pipelining HTTP/1.1 requests on a single connection and withhol…
Published: 2026-09-18 · CVSS: 7.5 · CVSS 3.1
A flaw was found in Netty's HttpServerCodec. A remote, unauthenticated attacker can exploit this vulnerability by pipelining HTTP/1.1 requests on a single connection and withholding reads. This action causes the methodOverflowQueue to grow without limit, leading to unbounded heap memory consumption and a denial of service due to memory exhaustion.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7