{"id":"CVE-2026-93488","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-93488","summary":"A flaw was found in Netty. SpdySessionHandler accepts an unlimited number of concurrent remote-initiated streams because localConcurrentStreams defaults to Integer.MAX_VALUE and the…","details":"A flaw was found in Netty. SpdySessionHandler accepts an unlimited number of concurrent remote-initiated streams because localConcurrentStreams defaults to Integer.MAX_VALUE and the handler provides no API to change it. A remote peer can open a SPDY connection and send a large number of SYN_STREAM frames with FLAG_FIN=0, causing unbounded heap and direct memory allocation that can lead to JVM OutOfMemoryError and a denial of service.","published":"2026-09-18T11:47:52.574Z","modified":"2026-09-18T11:47:52.574Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":null,"references":[{"type":"WEB","url":"https://access.redhat.com/security/cve/CVE-2026-93488"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2536887"},{"type":"WEB","url":"https://github.com/netty/netty/releases/tag/netty-4.1.138.Final"},{"type":"WEB","url":"https://github.com/netty/netty/releases/tag/netty-4.2.18.Final"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-09-18T11:47:52.574Z"}}