{"schema_version":1,"title":"Libevent vulnerabilities","summary":"Junglewise Threat Intelligence has tracked 9 vulnerabilities in Libevent: 0 in the last 7 days and 9 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-63495, was published on 20 August 2026. 1 technology has a page of its own.","url":"https://junglewise.ai/threats/vendors/libevent","json_url":"https://junglewise.ai/threats/vendors/libevent.json","publisher":"Junglewise Threat Intelligence","license":"CC-BY-4.0","license_url":"https://creativecommons.org/licenses/by/4.0/","attribution":"Junglewise Threat Intelligence, https://junglewise.ai/threats/vendors/libevent","sources":"NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories","kind":"vendor","counts":{"high":3,"all_time":9,"critical":0,"exploited":0,"last_7_days":0,"last_30_days":0,"last_90_days":9,"last_365_days":9},"latest":[{"cve":"CVE-2026-63495","cvss":7.5,"epss":0.0061,"slug":"cve-2026-63495-libevent-websocket-unbounded-memory-accumulation-via-frame","title":"Libevent WebSocket unbounded memory accumulation via frame fragmentation","severity":"high","exploited":false,"published_at":"2026-08-20T18:16:37.04+00:00","url":"https://junglewise.ai/threats/cve-2026-63495-libevent-websocket-unbounded-memory-accumulation-via-frame"},{"cve":"CVE-2026-63388","cvss":8.4,"epss":0.002,"slug":"cve-2026-63388-libevent-heap-out-of-bounds-write-in-bufferevent-sock","title":"Libevent heap out-of-bounds write in bufferevent_sock","severity":"high","exploited":false,"published_at":"2026-08-20T18:16:36.893+00:00","url":"https://junglewise.ai/threats/cve-2026-63388-libevent-heap-out-of-bounds-write-in-bufferevent-sock"},{"cve":"CVE-2026-63387","cvss":7,"epss":0.0045,"slug":"cve-2026-63387-libevent-off-by-one-stack-buffer-overflow-in-dns-response-parsing","title":"Libevent off-by-one stack buffer overflow in DNS response parsing","severity":"high","exploited":false,"published_at":"2026-08-20T18:16:36.723+00:00","url":"https://junglewise.ai/threats/cve-2026-63387-libevent-off-by-one-stack-buffer-overflow-in-dns-response-parsing"},{"cve":"CVE-2026-63384","cvss":7.5,"epss":0.0052,"slug":"cve-2026-63384-libevent-integer-overflow-in-evtag-unmarshal-header","title":"Libevent integer overflow in evtag_unmarshal_header","severity":"info","exploited":false,"published_at":"2026-08-20T18:16:36.367+00:00","url":"https://junglewise.ai/threats/cve-2026-63384-libevent-integer-overflow-in-evtag-unmarshal-header"},{"cve":"CVE-2026-63383","epss":0.0052,"slug":"cve-2026-63383-libevent-out-of-bounds-read-in-event-tagging","title":"Libevent out-of-bounds read in event_tagging","severity":"info","exploited":false,"published_at":"2026-08-20T18:16:35.917+00:00","url":"https://junglewise.ai/threats/cve-2026-63383-libevent-out-of-bounds-read-in-event-tagging"},{"cve":"CVE-2026-63382","epss":0.0078,"slug":"cve-2026-63382-libevent-http-request-smuggling-via-inconsistent-transfer","title":"Libevent HTTP request smuggling via inconsistent Transfer-Encoding parsing","severity":"info","exploited":false,"published_at":"2026-08-20T18:16:35.7+00:00","url":"https://junglewise.ai/threats/cve-2026-63382-libevent-http-request-smuggling-via-inconsistent-transfer"},{"cve":"CVE-2026-63381","epss":0.0016,"slug":"cve-2026-63381-libevent-use-after-free-in-evbuffer-add-buffer-reference","title":"Libevent use-after-free in evbuffer_add_buffer_reference","severity":"info","exploited":false,"published_at":"2026-08-20T18:16:35.53+00:00","url":"https://junglewise.ai/threats/cve-2026-63381-libevent-use-after-free-in-evbuffer-add-buffer-reference"},{"cve":"CVE-2026-63380","cvss":0,"epss":0.0014,"slug":"cve-2026-63380-libevent-null-pointer-dereference-in-evws-new-session-error-path","title":"Libevent null pointer dereference in evws_new_session error path","severity":"info","exploited":false,"published_at":"2026-08-20T18:16:35.357+00:00","url":"https://junglewise.ai/threats/cve-2026-63380-libevent-null-pointer-dereference-in-evws-new-session-error-path"},{"cve":"CVE-2026-63379","cvss":0,"epss":0.0071,"slug":"cve-2026-63379-libevent-http-chunked-trailer-header-smuggling","title":"Libevent HTTP chunked trailer header smuggling","severity":"info","exploited":false,"published_at":"2026-08-20T18:16:35.2+00:00","url":"https://junglewise.ai/threats/cve-2026-63379-libevent-http-chunked-trailer-header-smuggling"}],"vendor":{"hub":true,"name":"Libevent","slug":"libevent","url":"https://junglewise.ai/threats/vendors/libevent"},"weekly":[{"week":"2026-06-29","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-06","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-13","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-20","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-27","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-03","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-10","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-17","critical":0,"exploited":0,"vulnerabilities":9},{"week":"2026-08-24","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-31","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-07","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-14","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-21","critical":0,"exploited":0,"vulnerabilities":0}],"most_severe":[{"cve":"CVE-2026-63388","cvss":8.4,"epss":0.002,"slug":"cve-2026-63388-libevent-heap-out-of-bounds-write-in-bufferevent-sock","title":"Libevent heap out-of-bounds write in bufferevent_sock","severity":"high","exploited":false,"published_at":"2026-08-20T18:16:36.893+00:00","url":"https://junglewise.ai/threats/cve-2026-63388-libevent-heap-out-of-bounds-write-in-bufferevent-sock"},{"cve":"CVE-2026-63495","cvss":7.5,"epss":0.0061,"slug":"cve-2026-63495-libevent-websocket-unbounded-memory-accumulation-via-frame","title":"Libevent WebSocket unbounded memory accumulation via frame fragmentation","severity":"high","exploited":false,"published_at":"2026-08-20T18:16:37.04+00:00","url":"https://junglewise.ai/threats/cve-2026-63495-libevent-websocket-unbounded-memory-accumulation-via-frame"},{"cve":"CVE-2026-63387","cvss":7,"epss":0.0045,"slug":"cve-2026-63387-libevent-off-by-one-stack-buffer-overflow-in-dns-response-parsing","title":"Libevent off-by-one stack buffer overflow in DNS response parsing","severity":"high","exploited":false,"published_at":"2026-08-20T18:16:36.723+00:00","url":"https://junglewise.ai/threats/cve-2026-63387-libevent-off-by-one-stack-buffer-overflow-in-dns-response-parsing"},{"cve":"CVE-2026-63384","cvss":7.5,"epss":0.0052,"slug":"cve-2026-63384-libevent-integer-overflow-in-evtag-unmarshal-header","title":"Libevent integer overflow in evtag_unmarshal_header","severity":"info","exploited":false,"published_at":"2026-08-20T18:16:36.367+00:00","url":"https://junglewise.ai/threats/cve-2026-63384-libevent-integer-overflow-in-evtag-unmarshal-header"},{"cve":"CVE-2026-63379","cvss":0,"epss":0.0071,"slug":"cve-2026-63379-libevent-http-chunked-trailer-header-smuggling","title":"Libevent HTTP chunked trailer header smuggling","severity":"info","exploited":false,"published_at":"2026-08-20T18:16:35.2+00:00","url":"https://junglewise.ai/threats/cve-2026-63379-libevent-http-chunked-trailer-header-smuggling"},{"cve":"CVE-2026-63380","cvss":0,"epss":0.0014,"slug":"cve-2026-63380-libevent-null-pointer-dereference-in-evws-new-session-error-path","title":"Libevent null pointer dereference in evws_new_session error path","severity":"info","exploited":false,"published_at":"2026-08-20T18:16:35.357+00:00","url":"https://junglewise.ai/threats/cve-2026-63380-libevent-null-pointer-dereference-in-evws-new-session-error-path"},{"cve":"CVE-2026-63382","epss":0.0078,"slug":"cve-2026-63382-libevent-http-request-smuggling-via-inconsistent-transfer","title":"Libevent HTTP request smuggling via inconsistent Transfer-Encoding parsing","severity":"info","exploited":false,"published_at":"2026-08-20T18:16:35.7+00:00","url":"https://junglewise.ai/threats/cve-2026-63382-libevent-http-request-smuggling-via-inconsistent-transfer"},{"cve":"CVE-2026-63383","epss":0.0052,"slug":"cve-2026-63383-libevent-out-of-bounds-read-in-event-tagging","title":"Libevent out-of-bounds read in event_tagging","severity":"info","exploited":false,"published_at":"2026-08-20T18:16:35.917+00:00","url":"https://junglewise.ai/threats/cve-2026-63383-libevent-out-of-bounds-read-in-event-tagging"},{"cve":"CVE-2026-63381","epss":0.0016,"slug":"cve-2026-63381-libevent-use-after-free-in-evbuffer-add-buffer-reference","title":"Libevent use-after-free in evbuffer_add_buffer_reference","severity":"info","exploited":false,"published_at":"2026-08-20T18:16:35.53+00:00","url":"https://junglewise.ai/threats/cve-2026-63381-libevent-use-after-free-in-evbuffer-add-buffer-reference"}],"generated_at":"2026-09-26T09:11:00.170868+00:00","technologies":[{"name":"Libevent","slug":"libevent","vulnerabilities":10,"url":"https://junglewise.ai/threats/technologies/libevent"}]}