{"id":"CVE-2026-45759","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, Suricata could repeatedly perform expensive parsing of large HTTP `Content-Disposit…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-400"],"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":"2026-09-16T20:17:31.653","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-45759","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-cfq5-g2v5-6652","label":"security-advisories@github.com"},{"url":"https://redmine.openinfosecfoundation.org/issues/8529","label":"security-advisories@github.com"}],"tags":["nvd","cve.org"],"epss":0.00585,"epssPercentile":0.4671,"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2026-09-11T14:55:15.556027Z"},"ingestedAt":"2026-09-12T05:53:46.694Z","slug":"CVE-2026-45759","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, Suricata could repeatedly perform expensive parsing of large HTTP `Content-Disposition` headers during HTTP response body processing. Crafted HTTP traffic could cause excessive CPU usage and denial of service. Versions 7.0.16 and 8.0.5 contain a fix. As a workaround, use a rule like `alert http1 any any -> any any (sid: 1; http.request_header; content: \"Content-Disposition:\"; startswith; bsize: > 8192; bypass;)`.\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`","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}