{"id":"CVE-2026-57227","summary":"Suricata mqtt: unbounded resource consumption from repeated pubrec and pubrel messages","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.","aliases":["GHSA-7h2h-hpj2-9w6p"],"modified":"2026-09-19T11:45:24.755396237Z","published":"2026-09-18T20:14:55.843Z","related":["openSUSE-SU-2026:11308-1"],"database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-400","CWE-770"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/57xxx/CVE-2026-57227.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/57xxx/CVE-2026-57227.json"},{"type":"FIX","url":"https://github.com/OISF/suricata/commit/03ba8a71d827dd36a0ceb512f45d2f440f260a3a"},{"type":"FIX","url":"https://github.com/OISF/suricata/commit/5cde93dea38533c9b225128ba9d54955997dc273"},{"type":"FIX","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":"ADVISORY","url":"https://github.com/OISF/suricata/security/advisories/GHSA-7h2h-hpj2-9w6p"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-57227"},{"type":"WEB","url":"https://redmine.openinfosecfoundation.org/issues/8525"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/oisf/suricata","events":[{"introduced":"9956286fb89f9cad9e9f95b99dc751f8666617b7"},{"fixed":"4c28cc1b4ac64f48efdca6ce3e09748227a04a7e"},{"introduced":"21ec99aa76cc5406007ce12a4891f2eaedb02291"},{"fixed":"f707f3208de8216e4eccada5c10e6edce460a82a"}],"database_specific":{"extracted_events":[{"introduced":"8.0.0"},{"fixed":"8.0.6"},{"introduced":"7.0.0"},{"fixed":"7.0.17"}],"source":"AFFECTED_FIELD"}}],"versions":["suricata-7.0.16","suricata-8.0.5","suricata-8.0.4","suricata-7.0.15","suricata-7.0.14","suricata-8.0.3","suricata-8.0.2","suricata-7.0.13","suricata-7.0.12","suricata-8.0.1","suricata-8.0.0","suricata-7.0.11","suricata-7.0.10","suricata-7.0.9","suricata-7.0.8","suricata-7.0.7","suricata-7.0.6","suricata-7.0.5","suricata-7.0.4","suricata-7.0.3","suricata-7.0.2","suricata-7.0.1","suricata-7.0.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-57227.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}