{"schema_version":1,"title":"Corosync vulnerabilities","summary":"Junglewise Threat Intelligence has tracked 4 vulnerabilities in Corosync: 0 in the last 7 days and 2 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-81666, was published on 4 September 2026. 1 technology has a page of its own.","url":"https://junglewise.ai/threats/vendors/corosync","json_url":"https://junglewise.ai/threats/vendors/corosync.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/corosync","sources":"NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories","kind":"vendor","counts":{"high":3,"all_time":4,"critical":0,"exploited":0,"last_7_days":0,"last_30_days":2,"last_90_days":2,"last_365_days":4},"latest":[{"cve":"CVE-2026-81666","cvss":6.5,"epss":0.0031,"slug":"cve-2026-81666-corosync-integer-overflow-in-membership-commit-token-handling","title":"Corosync integer overflow in membership commit token handling","severity":"medium","exploited":false,"published_at":"2026-09-04T10:17:13.187+00:00","url":"https://junglewise.ai/threats/cve-2026-81666-corosync-integer-overflow-in-membership-commit-token-handling"},{"cve":"CVE-2026-81665","cvss":7.5,"epss":0.0035,"slug":"cve-2026-81665-corosync-heap-based-buffer-overflow-in-totem-message-reassembly","title":"Corosync heap-based buffer overflow in Totem message reassembly","severity":"high","exploited":false,"published_at":"2026-09-04T09:17:11.357+00:00","url":"https://junglewise.ai/threats/cve-2026-81665-corosync-heap-based-buffer-overflow-in-totem-message-reassembly"},{"cve":"CVE-2026-35092","cvss":7.5,"epss":0.0027,"slug":"cve-2026-35092-corosync-integer-overflow-in-join-message-validation","title":"Corosync integer overflow in join message validation","severity":"high","exploited":false,"published_at":"2026-04-01T14:16:57.237+00:00","url":"https://junglewise.ai/threats/cve-2026-35092-corosync-integer-overflow-in-join-message-validation"},{"cve":"CVE-2026-35091","cvss":8.2,"epss":0.0099,"slug":"cve-2026-35091-corosync-cluster-engine-out-of-bounds-read-in-membership-commit","title":"Corosync Cluster Engine out-of-bounds read in membership commit token check","severity":"high","exploited":false,"published_at":"2026-04-01T14:16:57.04+00:00","url":"https://junglewise.ai/threats/cve-2026-35091-corosync-cluster-engine-out-of-bounds-read-in-membership-commit"}],"vendor":{"hub":true,"name":"Corosync","slug":"corosync","homepage":"https://corosync.github.io/corosync/","description":"Corosync is an open-source project that provides a group communication system for high-availability clusters.","url":"https://junglewise.ai/threats/vendors/corosync"},"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":0},{"week":"2026-08-24","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-31","critical":0,"exploited":0,"vulnerabilities":2},{"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-2026-35091","cvss":8.2,"epss":0.0099,"slug":"cve-2026-35091-corosync-cluster-engine-out-of-bounds-read-in-membership-commit","title":"Corosync Cluster Engine out-of-bounds read in membership commit token check","severity":"high","exploited":false,"published_at":"2026-04-01T14:16:57.04+00:00","url":"https://junglewise.ai/threats/cve-2026-35091-corosync-cluster-engine-out-of-bounds-read-in-membership-commit"},{"cve":"CVE-2026-81665","cvss":7.5,"epss":0.0035,"slug":"cve-2026-81665-corosync-heap-based-buffer-overflow-in-totem-message-reassembly","title":"Corosync heap-based buffer overflow in Totem message reassembly","severity":"high","exploited":false,"published_at":"2026-09-04T09:17:11.357+00:00","url":"https://junglewise.ai/threats/cve-2026-81665-corosync-heap-based-buffer-overflow-in-totem-message-reassembly"},{"cve":"CVE-2026-35092","cvss":7.5,"epss":0.0027,"slug":"cve-2026-35092-corosync-integer-overflow-in-join-message-validation","title":"Corosync integer overflow in join message validation","severity":"high","exploited":false,"published_at":"2026-04-01T14:16:57.237+00:00","url":"https://junglewise.ai/threats/cve-2026-35092-corosync-integer-overflow-in-join-message-validation"},{"cve":"CVE-2026-81666","cvss":6.5,"epss":0.0031,"slug":"cve-2026-81666-corosync-integer-overflow-in-membership-commit-token-handling","title":"Corosync integer overflow in membership commit token handling","severity":"medium","exploited":false,"published_at":"2026-09-04T10:17:13.187+00:00","url":"https://junglewise.ai/threats/cve-2026-81666-corosync-integer-overflow-in-membership-commit-token-handling"}],"generated_at":"2026-09-26T09:11:00.170868+00:00","technologies":[{"name":"Corosync","slug":"corosync","vulnerabilities":4,"url":"https://junglewise.ai/threats/technologies/corosync"}]}