{"id":"CVE-2026-93558","published":"2026-09-18T15:17:19.590","lastModified":"2026-09-22T23:17:08.123","description":"A flaw was found in Netty's WebSocketServerExtensionHandler. A remote, unauthenticated attacker can exploit this vulnerability by using HTTP/1.1 pipelining to send requests faster than the application can respond. This leads to an unbounded growth of a per-connection queue, consuming excessive memory. Eventually, this can cause the Java Virtual Machine (JVM) to exhaust its heap, resulting in a Denial of Service (DoS) for the affected server.","cvssScore":7.5,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cwes":["CWE-1035"],"vendors":[],"products":[],"references":[{"url":"https://access.redhat.com/errata/RHSA-2026:69440","tags":[]},{"url":"https://access.redhat.com/errata/RHSA-2026:69470","tags":[]},{"url":"https://access.redhat.com/errata/RHSA-2026:70257","tags":[]},{"url":"https://access.redhat.com/security/cve/CVE-2026-93558","tags":[]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2536932","tags":[]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2536932","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}