{"id":"CVE-2026-22261","aliases":["DEBIAN-CVE-2026-22261","EUVD-2026-4786","GHSA-5jvg-5j3p-34cf","UBUNTU-CVE-2026-22261","openSUSE-SU-2026:10082-1"],"status":"published","title":"Suricata eve/alert: http1 xff handling can lead to denial of service","description":"Suricata is a network IDS, IPS and NSM engine. Prior to versions 8.0.3 and 7.0.14, various inefficiencies in xff handling, especially for alerts not triggered in a tx, can lead to severe slowdowns. Versions 8.0.3 and 7.0.14 contain a patch. As a workaround, disable XFF support in the eve configuration. The setting is disabled by default.","severity":{"version":"3.1","score":3.7,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"low","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.0037,"percentile":0.31189,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-1050"],"published":"2026-01-22T00:00:00Z","modified":"2026-10-28T02:30:34Z","fixes":[{"ecosystem":"Debian:13","package":"suricata","fixed_in":["1:7.0.10-1+deb13u3"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"suricata","fixed_in":["1:8.0.3-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:13","package":"suricata","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:7.0.10-1+deb13u3"}]}],"versions":["1:7.0.10-1","1:7.0.10-1+deb13u1","1:7.0.10-1+deb13u2"]},{"source":"osv","ecosystem":"Debian:14","package":"suricata","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:8.0.3-1"}]}],"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~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:25.10","package":"suricata","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:7.0.8-2","1:7.0.10-1"]},{"source":"osv","ecosystem":"openSUSE:Tumbleweed","package":"suricata","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"8.0.3-1.1"}]}],"bundled":14}],"products":[{"vendor":"oisf","product":"suricata"}],"references":[{"url":"https://github.com/OISF/suricata/security/advisories/GHSA-5jvg-5j3p-34cf","tags":["x_refsource_CONFIRM","Vendor Advisory","advisory","report"]},{"url":"https://github.com/OISF/suricata/commit/3f0725b34c7871c2de4346c8af872f10f4501e44","tags":["x_refsource_MISC","Patch","fix","report"]},{"url":"https://github.com/OISF/suricata/commit/af246ae7ab1b70c09f83c0619b253095ccc18667","tags":["x_refsource_MISC","Patch","fix","report"]},{"url":"https://redmine.openinfosecfoundation.org/issues/8156","tags":["x_refsource_MISC","Permissions Required","web","report"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/22xxx/CVE-2026-22261.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-22261","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-22261","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-22261","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-22261","tags":["report"]},{"url":"","tags":["advisory"]},{"url":"https://www.suse.com/security/cve/CVE-2025-64330","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-64331","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-64332","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-64333","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-64334","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-64335","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-64344","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-22258","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-22259","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-22260","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-22261","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-22262","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-22263","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-22264","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2026-22261","title":"Suricata eve/alert: http1 xff handling can lead to denial of service","description":"Suricata is a network IDS, IPS and NSM engine. Prior to versions 8.0.3 and 7.0.14, various inefficiencies in xff handling, especially for alerts not triggered in a tx, can lead to severe slowdowns. Versions 8.0.3 and 7.0.14 contain a patch. As a workaround, disable XFF support in the eve configuration. The setting is disabled by default.","status":"published","published":"2026-01-27T18:10:27.881Z","modified":"2026-01-27T18:24:24.317Z","cvss":[{"version":"3.1","score":3.7,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"low","assessor":"cna"}],"cwes":["CWE-1050"],"updated_at":"2026-11-02T13:39:16.730222Z"}],"euvd":[{"id":"EUVD-2026-4786","description":"Suricata is a network IDS, IPS and NSM engine. Prior to versions 8.0.3 and 7.0.14, various inefficiencies in xff handling, especially for alerts not triggered in a tx, can lead to severe slowdowns. Versions 8.0.3 and 7.0.14 contain a patch. As a workaround, disable XFF support in the eve configuration. The setting is disabled by default.","status":"published","published":"2026-01-27T18:10:27Z","modified":"2026-01-27T18:24:24Z","cvss":[{"version":"3.1","score":3.7,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"low"}],"updated_at":"2026-11-02T19:48:46.818498Z"}],"nvd":[{"id":"CVE-2026-22261","description":"Suricata is a network IDS, IPS and NSM engine. Prior to versions 8.0.3 and 7.0.14, various inefficiencies in xff handling, especially for alerts not triggered in a tx, can lead to severe slowdowns. Versions 8.0.3 and 7.0.14 contain a patch. As a workaround, disable XFF support in the eve configuration. The setting is disabled by default.","status":"published","published":"2026-01-27T19:16:14.173Z","modified":"2026-06-17T10:19:39.337Z","cvss":[{"version":"3.1","score":3.7,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"low","assessor":"secondary"},{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"primary"}],"cwes":["CWE-1050"],"updated_at":"2026-11-02T14:12:04.769088Z"}],"osv":[{"id":"CVE-2026-22261","title":"Suricata eve/alert: http1 xff handling can lead to denial of service","description":"Suricata is a network IDS, IPS and NSM engine. Prior to versions 8.0.3 and 7.0.14, various inefficiencies in xff handling, especially for alerts not triggered in a tx, can lead to severe slowdowns. Versions 8.0.3 and 7.0.14 contain a patch. As a workaround, disable XFF support in the eve configuration. The setting is disabled by default.","status":"published","published":"2026-01-27T18:10:27.881Z","modified":"2026-10-28T02:30:34.02456014Z","cvss":[{"version":"3.1","score":3.7,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"low"}],"cwes":["CWE-1050"],"updated_at":"2026-11-02T15:44:58.42038Z"},{"id":"DEBIAN-CVE-2026-22261","description":"Suricata is a network IDS, IPS and NSM engine. Prior to versions 8.0.3 and 7.0.14, various inefficiencies in xff handling, especially for alerts not triggered in a tx, can lead to severe slowdowns. Versions 8.0.3 and 7.0.14 contain a patch. As a workaround, disable XFF support in the eve configuration. The setting is disabled by default.","status":"published","published":"2026-01-27T19:16:14.173Z","modified":"2026-10-01T03:02:57.403052045Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"updated_at":"2026-11-02T15:45:53.097669Z"},{"id":"UBUNTU-CVE-2026-22261","description":"Suricata is a network IDS, IPS and NSM engine. Prior to versions 8.0.3 and 7.0.14, various inefficiencies in xff handling, especially for alerts not triggered in a tx, can lead to severe slowdowns. Versions 8.0.3 and 7.0.14 contain a patch. As a workaround, disable XFF support in the eve configuration. The setting is disabled by default.","status":"published","published":"2026-01-27T19:16:00Z","modified":"2026-02-03T08:44:51.521588Z","cvss":[{"version":"3.1","score":3.7,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"low"},{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"updated_at":"2026-11-02T16:56:01.334185Z"},{"id":"openSUSE-SU-2026:10082-1","title":"libsuricata8_0_3-8.0.3-1.1 on GA media","description":"These are all security issues fixed in the libsuricata8_0_3-8.0.3-1.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2026-01-22T00:00:00Z","modified":"2026-03-23T04:54:26.22943Z","updated_at":"2026-11-02T16:58:38.101535Z"}]}}