{"id":"CVE-2026-45759","aliases":["DEBIAN-CVE-2026-45759","EUVD-2026-75754","GHSA-cfq5-g2v5-6652","UBUNTU-CVE-2026-45759","openSUSE-SU-2026:10885-1"],"status":"published","title":"Suricata http1: quadratic Content-Disposition processing 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, 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 -\u003e any any (sid: 1; http.request_header; content: \"Content-Disposition:\"; startswith; bsize: \u003e 8192; bypass;)`.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00836,"percentile":0.58175,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-400"],"published":"2026-05-28T00:00:00Z","modified":"2026-10-28T02:30:47Z","fixes":[{"ecosystem":"Debian:14","package":"suricata","fixed_in":["1:8.0.5-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:13","package":"suricata","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:7.0.10-1","1:7.0.10-1+deb13u1","1:7.0.10-1+deb13u2","1:7.0.10-1+deb13u3","1:7.0.10-1+deb13u4","1:7.0.11-1","1:7.0.11-1~bpo13+1","1:8.0.0-1~exp1","1:8.0.0-1~exp2","1:8.0.0-1~exp4","1:8.0.0-1~exp5","1:8.0.1-1","1:8.0.1-2","1:8.0.1-3","1:8.0.1-3~bpo13+1","1:8.0.2-1","1:8.0.2-1~bpo13+1","1:8.0.3-1","1:8.0.3-1~bpo13+1","1:8.0.3-2~exp1","1:8.0.4-1","1:8.0.4-1~bpo13+1","1:8.0.5-1","1:8.0.5-1~bpo13+1","1:8.0.6-1","1:8.0.6-1~bpo13+1","1:8.0.7-1","1:8.0.7-1~bpo13+1","1:8.0.7-2~exp1"]},{"source":"osv","ecosystem":"Debian:14","package":"suricata","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:8.0.5-1"}]}],"versions":["1:7.0.10-1","1:7.0.11-1","1:7.0.11-1~bpo13+1","1:8.0.0-1~exp1","1:8.0.0-1~exp2","1:8.0.0-1~exp4","1:8.0.0-1~exp5","1:8.0.1-1","1:8.0.1-2","1:8.0.1-3","1:8.0.1-3~bpo13+1","1:8.0.2-1","1:8.0.2-1~bpo13+1","1:8.0.3-1","1:8.0.3-1~bpo13+1","1:8.0.3-2~exp1","1:8.0.4-1","1:8.0.4-1~bpo13+1","1:8.0.5-1~bpo13+1"]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"suricata","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.0.8-1build1","2.0.9-1","2.0.10-1","2.0.10-2","2.0.11-1","3.0-1"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"suricata","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.2-2ubuntu3"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"suricata","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:6.0.4-2","1:6.0.4-3"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"suricata","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:7.0.0-2","1:7.0.2-1","1:7.0.2-1build1","1:7.0.3-1build1","1:7.0.3-1build3"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"suricata","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:7.0.10-1","1:8.0.1-3build1","1:8.0.2-1","1:8.0.2-1build1","1:8.0.3-1"]},{"source":"osv","ecosystem":"openSUSE:Tumbleweed","package":"suricata","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"8.0.5-1.1"}]}],"bundled":15}],"products":[{"vendor":"oisf","product":"suricata"}],"references":[{"url":"https://github.com/OISF/suricata/security/advisories/GHSA-cfq5-g2v5-6652","tags":["x_refsource_CONFIRM","Vendor Advisory","advisory","report"]},{"url":"https://forum.suricata.io/t/suricata-8-0-5-and-7-0-16-released/6315","tags":["x_refsource_MISC","Release Notes","Vendor Advisory","web","report"]},{"url":"https://redmine.openinfosecfoundation.org/issues/8529","tags":["x_refsource_MISC","Permissions Required","web","report"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45759.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-45759","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-45759","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-45759","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-45759","tags":["report"]},{"url":"https://redmine.openinfosecfoundation.org/issues/8531","tags":["report"]},{"url":"https://redmine.openinfosecfoundation.org/issues/8530","tags":["report"]},{"url":"https://github.com/OISF/suricata/commit/a41b135c5c054c806346f8d6e02d67b8f5594be0","tags":["report"]},{"url":"https://github.com/OISF/suricata/commit/8abe0f2a8de0d910d4d4461474f5bfb519877053","tags":["report"]},{"url":"","tags":["advisory"]},{"url":"https://www.suse.com/security/cve/CVE-2026-45751","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-45752","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-45759","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-45761","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-45762","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-45763","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-45764","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-45765","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-45766","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-45767","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-45768","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-45769","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-45770","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-46352","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-46387","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2026-45759","title":"Suricata http1: quadratic Content-Disposition processing 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, 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 -\u003e any any (sid: 1; http.request_header; content: \"Content-Disposition:\"; startswith; bsize: \u003e 8192; bypass;)`.","status":"published","published":"2026-09-10T21:01:19.169Z","modified":"2026-09-11T14:55:25.603Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T13:46:32.755125Z"}],"euvd":[{"id":"EUVD-2026-75754","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, 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 -\u003e any any (sid: 1; http.request_header; content: \"Content-Disposition:\"; startswith; bsize: \u003e 8192; bypass;)`.","status":"published","published":"2026-09-10T21:01:19Z","modified":"2026-09-11T14:55:25Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T17:28:22.567961Z"}],"nvd":[{"id":"CVE-2026-45759","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, 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 -\u003e any any (sid: 1; http.request_header; content: \"Content-Disposition:\"; startswith; bsize: \u003e 8192; bypass;)`.","status":"published","published":"2026-09-10T21:17:27.543Z","modified":"2026-09-16T20:17:31.653Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:12:46.271848Z"}],"osv":[{"id":"CVE-2026-45759","title":"Suricata http1: quadratic Content-Disposition processing 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, 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 -\u003e any any (sid: 1; http.request_header; content: \"Content-Disposition:\"; startswith; bsize: \u003e 8192; bypass;)`.","status":"published","published":"2026-09-10T21:01:19.169Z","modified":"2026-10-28T02:30:47.669161223Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T15:45:05.525666Z"},{"id":"DEBIAN-CVE-2026-45759","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, 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 -\u003e any any (sid: 1; http.request_header; content: \"Content-Disposition:\"; startswith; bsize: \u003e 8192; bypass;)`.","status":"published","published":"2026-09-10T21:17:27.543Z","modified":"2026-10-01T03:03:14.683086611Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:55.669088Z"},{"id":"UBUNTU-CVE-2026-45759","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, 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 -\u003e any any (sid: 1; http.request_header; content: \"Content-Disposition:\"; startswith; bsize: \u003e 8192; bypass;)`.","status":"published","published":"2026-09-10T21:17:00Z","modified":"2026-09-16T11:34:30Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T16:56:26.396868Z"},{"id":"openSUSE-SU-2026:10885-1","title":"libsuricata8_0_5-8.0.5-1.1 on GA media","description":"These are all security issues fixed in the libsuricata8_0_5-8.0.5-1.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2026-05-28T00:00:00Z","modified":"2026-05-29T08:15:06.445006444Z","updated_at":"2026-11-02T16:58:38.95195Z"}]}}