{"id":"CVE-2026-45764","title":"Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine","summary":"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 S…","severity":"critical","cvss":9.1,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H","cwe":["CWE-843"],"vendor":"oisf","product":"suricata","affected":["suricata >= 7.0.0, < 7.0.16","suricata >= 8.0.0, < 8.0.5"],"patched":["suricata 8.0.5"],"published":"2026-09-10","updated":"2026-09-16","sourceUpdated":"2026-09-16T20:17:56.497","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-45764","references":[{"url":"https://forum.suricata.io/t/suricata-8-0-5-and-7-0-16-released/6315","label":"security-advisories@github.com"},{"url":"https://github.com/OISF/suricata/security/advisories/GHSA-5rvq-72r5-rqhr","label":"security-advisories@github.com"},{"url":"https://redmine.openinfosecfoundation.org/issues/8492","label":"security-advisories@github.com"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-45764.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-45764"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-45764"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-45764"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"epss":0.00426,"epssPercentile":0.36505,"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2026-09-11T15:12:01.089283Z"},"scores":{"nvd":9.1,"vendor":7.5},"ingestedAt":"2026-09-12T16:30:34.774Z","slug":"CVE-2026-45764","body":"## Overview\n\nSuricata 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.\n\n## Affected\n\n- `suricata >= 7.0.0, < 7.0.16`\n- `suricata >= 8.0.0, < 8.0.5`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `suricata 8.0.5`\n\n## Vendor advisories\n\n- **Red Hat VEX** · updated 2026-09-15 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-45764.json)","depth":"midnight","depthScore":50,"depthScoreParts":{"impact":50.1,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}