{"id":"CVE-2026-22261","state":"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.","publishedAt":"2026-01-27T18:10:27.881Z","updatedAt":"2026-01-27T18:24:24.317Z","severity":{"score":3.7,"label":"Low","version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L","source":"GitHub_M"},"assigner":"GitHub_M","products":["OISF suricata"],"affected":[{"vendor":"OISF","product":"suricata","versions":[{"version":"< 7.0.14","status":"affected"},{"version":">= 8.0.0, < 8.0.3","status":"affected"}]}],"references":["https://github.com/OISF/suricata/security/advisories/GHSA-5jvg-5j3p-34cf","https://github.com/OISF/suricata/commit/3f0725b34c7871c2de4346c8af872f10f4501e44","https://github.com/OISF/suricata/commit/af246ae7ab1b70c09f83c0619b253095ccc18667","https://redmine.openinfosecfoundation.org/issues/8156"],"weaknesses":["CWE-1050"],"ingestedAt":"2026-10-29T20:11:21.040Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/22xxx/CVE-2026-22261.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-22261","state":"PUBLISHED","datePublished":"2026-01-27T18:10:27.881Z","dateUpdated":"2026-01-27T18:24:24.317Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-01-07T05:19:12.923Z"},"containers":{"cna":{"title":"Suricata eve/alert: http1 xff handling can lead to denial of service","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"OISF","product":"suricata","versions":[{"version":"< 7.0.14","status":"affected"},{"version":">= 8.0.0, < 8.0.3","status":"affected"}]}],"references":[{"url":"https://github.com/OISF/suricata/security/advisories/GHSA-5jvg-5j3p-34cf","name":"https://github.com/OISF/suricata/security/advisories/GHSA-5jvg-5j3p-34cf","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/OISF/suricata/commit/3f0725b34c7871c2de4346c8af872f10f4501e44","name":"https://github.com/OISF/suricata/commit/3f0725b34c7871c2de4346c8af872f10f4501e44","tags":["x_refsource_MISC"]},{"url":"https://github.com/OISF/suricata/commit/af246ae7ab1b70c09f83c0619b253095ccc18667","name":"https://github.com/OISF/suricata/commit/af246ae7ab1b70c09f83c0619b253095ccc18667","tags":["x_refsource_MISC"]},{"url":"https://redmine.openinfosecfoundation.org/issues/8156","name":"https://redmine.openinfosecfoundation.org/issues/8156","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":3.7,"baseSeverity":"LOW","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-1050","lang":"en","description":"CWE-1050: Excessive Platform Resource Consumption within a Loop","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-01-27T18:10:27.881Z"},"source":{"advisory":"GHSA-5jvg-5j3p-34cf","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-01-27T18:24:03.406014Z","id":"CVE-2026-22261","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-01-27T18:24:24.317Z"}}]}}}