{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-63447", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-07-16T19:35:57.767Z", "datePublished": "2026-09-18T20:21:06.510Z", "dateUpdated": "2026-09-18T20:21:06.510Z"}, "containers": {"cna": {"title": "Suricata ftp: crafted FTP traffic can cause quadratic CPU consumption", "problemTypes": [{"descriptions": [{"cweId": "CWE-407", "lang": "en", "description": "CWE-407: Inefficient Algorithmic Complexity", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}}], "references": [{"name": "https://github.com/OISF/suricata/security/advisories/GHSA-w394-3g33-3jg9", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/OISF/suricata/security/advisories/GHSA-w394-3g33-3jg9"}, {"name": "https://github.com/OISF/suricata/commit/15bf91c5ccbbbf640cd042e1c96974b262549385", "tags": ["x_refsource_MISC"], "url": "https://github.com/OISF/suricata/commit/15bf91c5ccbbbf640cd042e1c96974b262549385"}, {"name": "https://github.com/OISF/suricata/commit/82c41905589305e8389ceb793907ccb74798aee5", "tags": ["x_refsource_MISC"], "url": "https://github.com/OISF/suricata/commit/82c41905589305e8389ceb793907ccb74798aee5"}, {"name": "https://github.com/OISF/suricata/releases/tag/suricata-8.0.6", "tags": ["x_refsource_MISC"], "url": "https://github.com/OISF/suricata/releases/tag/suricata-8.0.6"}, {"name": "https://redmine.openinfosecfoundation.org/issues/8592", "tags": ["x_refsource_MISC"], "url": "https://redmine.openinfosecfoundation.org/issues/8592"}], "affected": [{"vendor": "OISF", "product": "suricata", "versions": [{"version": ">= 8.0.5, < 8.0.6", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-09-18T20:21:06.510Z"}, "descriptions": [{"lang": "en", "value": "Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. From 8.0.5 until 8.0.6, the FTP parser in src/app-layer-ftp.c can continue allocating transactions after app-layer.protocols.ftp.max-tx is reached while processing one large chunk of FTP command data. The oversized transaction list is repeatedly processed with quadratic complexity after the too_many_transactions event, allowing crafted FTP traffic to degrade packet processing, reduce monitoring visibility, or cause denial of service. This issue is fixed in version 8.0.6."}], "source": {"advisory": "GHSA-w394-3g33-3jg9", "discovery": "UNKNOWN"}}}}

{}

{"affected": [{"affectedData": [{"product": "suricata", "vendor": "OISF", "versions": [{"status": "affected", "version": ">= 8.0.5, < 8.0.6"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. From 8.0.5 until 8.0.6, the FTP parser in src/app-layer-ftp.c can continue allocating transactions after app-layer.protocols.ftp.max-tx is reached while processing one large chunk of FTP command data. The oversized transaction list is repeatedly processed with quadratic complexity after the too_many_transactions event, allowing crafted FTP traffic to degrade packet processing, reduce monitoring visibility, or cause denial of service. This issue is fixed in version 8.0.6."}], "id": "CVE-2026-63447", "lastModified": "2026-09-18T21:17:03.913", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-09-18T21:17:03.913", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/OISF/suricata/commit/15bf91c5ccbbbf640cd042e1c96974b262549385"}, {"source": "security-advisories@github.com", "url": "https://github.com/OISF/suricata/commit/82c41905589305e8389ceb793907ccb74798aee5"}, {"source": "security-advisories@github.com", "url": "https://github.com/OISF/suricata/releases/tag/suricata-8.0.6"}, {"source": "security-advisories@github.com", "url": "https://github.com/OISF/suricata/security/advisories/GHSA-w394-3g33-3jg9"}, {"source": "security-advisories@github.com", "url": "https://redmine.openinfosecfoundation.org/issues/8592"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-407"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{"created": "2026-09-19T11:30:06.473955+00:00", "updated": "2026-09-19T11:30:06.473962+00:00", "vendors": []}