{"api_version":"1","generated_at":"2026-09-11T00:48:35+00:00","cve":"CVE-2026-45770","urls":{"html":"https://cve.report/CVE-2026-45770","api":"https://cve.report/api/cve/CVE-2026-45770.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-45770","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-45770"},"summary":{"title":"Suricata lua: excessive flow variable registration can bypass sandbox","description":"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. 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As a workaround, disable `security.lua.allow-rules` unless Lua rules are required."}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-693","description":"CWE-693: Protection Mechanism Failure","lang":"en","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-787","description":"CWE-787: Out-of-bounds Write","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-09-10T21:42:22.056Z","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M"},"references":[{"name":"https://github.com/OISF/suricata/security/advisories/GHSA-653j-cc95-vj4c","tags":["x_refsource_CONFIRM"],"url":"https://github.com/OISF/suricata/security/advisories/GHSA-653j-cc95-vj4c"},{"name":"https://forum.suricata.io/t/suricata-8-0-5-and-7-0-16-released/6315","tags":["x_refsource_MISC"],"url":"https://forum.suricata.io/t/suricata-8-0-5-and-7-0-16-released/6315"},{"name":"https://redmine.openinfosecfoundation.org/issues/8556","tags":["x_refsource_MISC"],"url":"https://redmine.openinfosecfoundation.org/issues/8556"}],"source":{"advisory":"GHSA-653j-cc95-vj4c","discovery":"UNKNOWN"},"title":"Suricata lua: excessive flow variable registration can bypass sandbox"}},"cveMetadata":{"assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","assignerShortName":"GitHub_M","cveId":"CVE-2026-45770","datePublished":"2026-09-10T21:42:03.007Z","dateReserved":"2026-05-13T07:45:21.251Z","dateUpdated":"2026-09-10T21:42:22.056Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-10 22:16:57","lastModifiedDate":"2026-09-10 22:16:57","problem_types":["CWE-693","CWE-787","CWE-693 CWE-693: Protection Mechanism Failure","CWE-787 CWE-787: Out-of-bounds Write"],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","baseScore":7.5,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"HIGH","availabilityImpact":"NONE"},"exploitabilityScore":3.9,"impactScore":3.6}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"45770","Ordinal":"1","Title":"Suricata lua: excessive flow variable registration can bypass sa","CVE":"CVE-2026-45770","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"45770","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"Suricata lua: excessive flow variable registration can bypass sa"}]}}}