{"id":"CVE-2026-57227","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-57227","summary":"Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. From 7.0.0 until 7.0.17 and 8.0.6, the MQTT parser in rust/src/mqtt/mqtt.rs…","details":"Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. From 7.0.0 until 7.0.17 and 8.0.6, the MQTT parser in rust/src/mqtt/mqtt.rs permits repeated PUBREC or PUBREL messages to be appended to one transaction without a limit. Crafted MQTT traffic can grow transaction state indefinitely, consuming CPU and memory and causing slowdown or denial of service. This issue is fixed in versions 8.0.6 and 7.0.17.","published":"2026-09-18T21:17:01.217","modified":"2026-09-18T21:17:01.217","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":{"url":"https://github.com/OISF/suricata/commit/03ba8a71d827dd36a0ceb512f45d2f440f260a3a","label":"OISF/suricata@03ba8a7"},"references":[{"type":"WEB","url":"https://github.com/OISF/suricata/commit/03ba8a71d827dd36a0ceb512f45d2f440f260a3a"},{"type":"WEB","url":"https://github.com/OISF/suricata/commit/5cde93dea38533c9b225128ba9d54955997dc273"},{"type":"WEB","url":"https://github.com/OISF/suricata/commit/c03666d261256df5a2d1f5800872da8a5addf6a5"},{"type":"WEB","url":"https://github.com/OISF/suricata/releases/tag/suricata-7.0.17"},{"type":"WEB","url":"https://github.com/OISF/suricata/releases/tag/suricata-8.0.6"},{"type":"WEB","url":"https://github.com/OISF/suricata/security/advisories/GHSA-7h2h-hpj2-9w6p"},{"type":"WEB","url":"https://redmine.openinfosecfoundation.org/issues/8525"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-09-18T21:17:01.217"}}