Is CVE-2026-93491 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-93491?

CVE-2026-93491 has a CVSS v3 severity of HIGH (7.5).

Back

CVE-2026-93491

Description

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.