{"id":"CVE-2026-45770","summary":"Suricata lua: excessive flow variable registration can bypass sandbox","details":"Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Starting in version 8.0.0 and prior to version 8.0.5, a Lua rule that registers too many flow variables can corrupt Lua detection state and may bypass Suricata's restricted Lua sandbox. This requires an affected Lua script/rule to be loaded. Excessive flow variables being registered may also cause Suricata to crash. Version 8.0.5 contains a fix. As a workaround, disable `security.lua.allow-rules` unless Lua rules are required.","aliases":["GHSA-653j-cc95-vj4c"],"modified":"2026-09-13T03:30:58.193890687Z","published":"2026-09-10T21:42:03.007Z","related":["openSUSE-SU-2026:10885-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45770.json","cna_assigner":"GitHub_M","cwe_ids":["CWE-693","CWE-787"]},"references":[{"type":"WEB","url":"https://forum.suricata.io/t/suricata-8-0-5-and-7-0-16-released/6315"},{"type":"WEB","url":"https://redmine.openinfosecfoundation.org/issues/8556"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45770.json"},{"type":"ADVISORY","url":"https://github.com/OISF/suricata/security/advisories/GHSA-653j-cc95-vj4c"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-45770"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/oisf/suricata","events":[{"introduced":"9956286fb89f9cad9e9f95b99dc751f8666617b7"},{"fixed":"5611b60c6172fe4204cd69a9c9d466b6632dd0c7"}],"database_specific":{"extracted_events":[{"introduced":"8.0.0"},{"fixed":"8.0.5"}],"source":"AFFECTED_FIELD"}}],"versions":["suricata-8.0.4","suricata-8.0.3","suricata-8.0.2","suricata-8.0.1","suricata-8.0.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-45770.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:H/A:N"}]}