{"schemaVersion":3,"id":"CVE-2026-63495","aliases":["RHSA-2026:41176","UBUNTU-CVE-2026-63495"],"status":"published","duplicateOf":null,"title":null,"description":"Libevent is an event notification library. From 2.2.0-alpha-dev until 2.2.2-alpha, the libevent WebSocket server in ws.c accumulates fragmented frames in evws->incomplete_frames without enforcing a total message-size limit. An unauthenticated remote client can repeatedly send fragmented WebSocket frames below WS_MAX_RECV_FRAME_SZ with FIN=0, causing the evbuffer to grow without bound until the process or host exhausts memory. 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