{"api_version":"1","generated_at":"2026-09-11T00:48:34+00:00","cve":"CVE-2026-45764","urls":{"html":"https://cve.report/CVE-2026-45764","api":"https://cve.report/api/cve/CVE-2026-45764.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-45764","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-45764"},"summary":{"title":"Suricata http2: protocol-change type confusion can lead to denial of service","description":"Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to versions 7.0.16 and 8.0.5, a protocol change while processing HTTP/2 traffic could lead to type confusion in Suricata. Crafted traffic may cause Suricata to crash, resulting in denial of service. Versions 7.0.16 and 8.0.5 contain a fix. As a workaround, disable HTTP/2 parsing if it is not required.","state":"PUBLISHED","assigner":"GitHub_M","published_at":"2026-09-10 22:16:56","updated_at":"2026-09-10 22:16:56"},"problem_types":["CWE-843","CWE-843 CWE-843: Access of Resource Using Incompatible Type ('Type Confusion')"],"metrics":[{"version":"3.1","source":"security-advisories@github.com","type":"Secondary","score":"9.1","severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H","baseScore":9.1,"baseSeverity":"CRITICAL","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"HIGH","availabilityImpact":"HIGH"}},{"version":"3.1","source":"CNA","type":"DECLARED","score":"9.1","severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H","data":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":9.1,"baseSeverity":"CRITICAL","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:H","version":"3.1"}}],"references":[{"url":"https://github.com/OISF/suricata/security/advisories/GHSA-5rvq-72r5-rqhr","name":"https://github.com/OISF/suricata/security/advisories/GHSA-5rvq-72r5-rqhr","refsource":"security-advisories@github.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://redmine.openinfosecfoundation.org/issues/8492","name":"https://redmine.openinfosecfoundation.org/issues/8492","refsource":"security-advisories@github.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://forum.suricata.io/t/suricata-8-0-5-and-7-0-16-released/6315","name":"https://forum.suricata.io/t/suricata-8-0-5-and-7-0-16-released/6315","refsource":"security-advisories@github.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-45764","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-45764","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"OISF","product":"suricata","version":"affected >= 8.0.0, < 8.0.5","platforms":[]},{"source":"CNA","vendor":"OISF","product":"suricata","version":"affected < 7.0.16","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"product":"suricata","vendor":"OISF","versions":[{"status":"affected","version":">= 8.0.0, < 8.0.5"},{"status":"affected","version":"< 7.0.16"}]}],"descriptions":[{"lang":"en","value":"Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to versions 7.0.16 and 8.0.5, a protocol change while processing HTTP/2 traffic could lead to type confusion in Suricata. Crafted traffic may cause Suricata to crash, resulting in denial of service. Versions 7.0.16 and 8.0.5 contain a fix. As a workaround, disable HTTP/2 parsing if it is not required."}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":9.1,"baseSeverity":"CRITICAL","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:H","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-843","description":"CWE-843: Access of Resource Using Incompatible Type ('Type Confusion')","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-09-10T21:14:30.072Z","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M"},"references":[{"name":"https://github.com/OISF/suricata/security/advisories/GHSA-5rvq-72r5-rqhr","tags":["x_refsource_CONFIRM"],"url":"https://github.com/OISF/suricata/security/advisories/GHSA-5rvq-72r5-rqhr"},{"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/8492","tags":["x_refsource_MISC"],"url":"https://redmine.openinfosecfoundation.org/issues/8492"}],"source":{"advisory":"GHSA-5rvq-72r5-rqhr","discovery":"UNKNOWN"},"title":"Suricata http2: protocol-change type confusion can lead to denial of service"}},"cveMetadata":{"assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","assignerShortName":"GitHub_M","cveId":"CVE-2026-45764","datePublished":"2026-09-10T21:14:30.072Z","dateReserved":"2026-05-13T07:45:21.250Z","dateUpdated":"2026-09-10T21:14:30.072Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-10 22:16:56","lastModifiedDate":"2026-09-10 22:16:56","problem_types":["CWE-843","CWE-843 CWE-843: Access of Resource Using Incompatible Type ('Type Confusion')"],"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:H","baseScore":9.1,"baseSeverity":"CRITICAL","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":3.9,"impactScore":5.2}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"45764","Ordinal":"1","Title":"Suricata http2: protocol-change type confusion can lead to denia","CVE":"CVE-2026-45764","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"45764","Ordinal":"1","NoteData":"Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to versions 7.0.16 and 8.0.5, a protocol change while processing HTTP/2 traffic could lead to type confusion in Suricata. Crafted traffic may cause Suricata to crash, resulting in denial of service. Versions 7.0.16 and 8.0.5 contain a fix. As a workaround, disable HTTP/2 parsing if it is not required.","Type":"Description","Title":"Suricata http2: protocol-change type confusion can lead to denia"}]}}}