GCVE Workshop - 22 September 2026 (14:00-18:00), Luxembourg Before The Vulnopticon Conference - Registration

CVE-2026-22261 (GCVE-0-2026-22261)

Vulnerability from cvelistv5 – Published: 2026-01-27 18:10 – Updated: 2026-01-27 18:24
VLAI
Title
Suricata eve/alert: http1 xff handling can lead to denial of service
Summary
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.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-01-27 18:24 UTC
CWE
  • CWE-1050 - Excessive Platform Resource Consumption within a Loop
Impacted products
Vendor Product Version CPE status
OISF suricata Affected: < 7.0.14
Affected: >= 8.0.0, < 8.0.3
guessed Create a notification for this product.
Show details on NVD website

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-22261",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-01-27T18:24:03.406014Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-01-27T18:24:24.317Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "suricata",
          "vendor": "OISF",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 7.0.14"
            },
            {
              "status": "affected",
              "version": "\u003e= 8.0.0, \u003c 8.0.3"
            }
          ]
        }
      ],
      "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."
        }
      ],
      "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",
              "description": "CWE-1050: Excessive Platform Resource Consumption within a Loop",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-01-27T18:10:27.881Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/OISF/suricata/security/advisories/GHSA-5jvg-5j3p-34cf",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/OISF/suricata/security/advisories/GHSA-5jvg-5j3p-34cf"
        },
        {
          "name": "https://github.com/OISF/suricata/commit/3f0725b34c7871c2de4346c8af872f10f4501e44",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/OISF/suricata/commit/3f0725b34c7871c2de4346c8af872f10f4501e44"
        },
        {
          "name": "https://github.com/OISF/suricata/commit/af246ae7ab1b70c09f83c0619b253095ccc18667",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/OISF/suricata/commit/af246ae7ab1b70c09f83c0619b253095ccc18667"
        },
        {
          "name": "https://redmine.openinfosecfoundation.org/issues/8156",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://redmine.openinfosecfoundation.org/issues/8156"
        }
      ],
      "source": {
        "advisory": "GHSA-5jvg-5j3p-34cf",
        "discovery": "UNKNOWN"
      },
      "title": "Suricata eve/alert: http1 xff handling can lead to denial of service"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-22261",
    "datePublished": "2026-01-27T18:10:27.881Z",
    "dateReserved": "2026-01-07T05:19:12.923Z",
    "dateUpdated": "2026-01-27T18:24:24.317Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-22261",
      "date": "2026-09-15",
      "epss": "0.00331",
      "percentile": "0.26114"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-22261\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2026-01-27T19:16:14.173\",\"lastModified\":\"2026-06-17T10:19:39.337\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"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.\"},{\"lang\":\"es\",\"value\":\"Suricata es un motor de red IDS, IPS y NSM. Antes de las versiones 8.0.3 y 7.0.14, varias ineficiencias en el manejo de xff, especialmente para alertas no activadas en una tx, pueden provocar ralentizaciones graves. Las versiones 8.0.3 y 7.0.14 contienen un parche. Como soluci\u00f3n alternativa, deshabilite el soporte XFF en la configuraci\u00f3n de eve. La configuraci\u00f3n est\u00e1 deshabilitada por defecto.\"}],\"affected\":[{\"source\":\"security-advisories@github.com\",\"affectedData\":[{\"vendor\":\"OISF\",\"product\":\"suricata\",\"versions\":[{\"version\":\"\u003c 7.0.14\",\"status\":\"affected\"},{\"version\":\"\u003e= 8.0.0, \u003c 8.0.3\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L\",\"baseScore\":3.7,\"baseSeverity\":\"LOW\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"LOW\"},\"exploitabilityScore\":2.2,\"impactScore\":1.4},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L\",\"baseScore\":5.3,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"LOW\"},\"exploitabilityScore\":3.9,\"impactScore\":1.4}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2026-01-27T18:24:03.406014Z\",\"id\":\"CVE-2026-22261\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-1050\"}]},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"NVD-CWE-noinfo\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:oisf:suricata:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"7.0.14\",\"matchCriteriaId\":\"5302B0F0-AF2D-4140-BC66-9186EF7E455D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:oisf:suricata:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"8.0.0\",\"versionEndExcluding\":\"8.0.3\",\"matchCriteriaId\":\"E7DA8362-52A2-4ACC-83F7-CA2E77AE89C6\"}]}]}],\"references\":[{\"url\":\"https://github.com/OISF/suricata/commit/3f0725b34c7871c2de4346c8af872f10f4501e44\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Patch\"]},{\"url\":\"https://github.com/OISF/suricata/commit/af246ae7ab1b70c09f83c0619b253095ccc18667\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Patch\"]},{\"url\":\"https://github.com/OISF/suricata/security/advisories/GHSA-5jvg-5j3p-34cf\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"https://redmine.openinfosecfoundation.org/issues/8156\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Permissions Required\"]}]}}",
    "redhat_vex": {
      "current_release_date": "2026-06-28T07:17:35+00:00",
      "cve": "CVE-2026-22261",
      "id": "CVE-2026-22261",
      "initial_release_date": "2026-01-27T18:10:27.881000+00:00",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "suricata: Suricata: Denial of Service due to XFF handling inefficiencies",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-22261.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-02-01T00:24:09Z",
      "cve": "CVE-2026-22261",
      "id": "CVE-2026-22261",
      "initial_release_date": "2026-01-30T00:25:59Z",
      "product_status:recommended": "3",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-22261",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-22261.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-22261\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-01-27T18:24:03.406014Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-01-27T18:24:17.079Z\"}}], \"cna\": {\"title\": \"Suricata eve/alert: http1 xff handling can lead to denial of service\", \"source\": {\"advisory\": \"GHSA-5jvg-5j3p-34cf\", \"discovery\": \"UNKNOWN\"}, \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 3.7, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"LOW\", \"vectorString\": \"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"HIGH\", \"availabilityImpact\": \"LOW\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"NONE\"}}], \"affected\": [{\"vendor\": \"OISF\", \"product\": \"suricata\", \"versions\": [{\"status\": \"affected\", \"version\": \"\u003c 7.0.14\"}, {\"status\": \"affected\", \"version\": \"\u003e= 8.0.0, \u003c 8.0.3\"}]}], \"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\"]}], \"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.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-1050\", \"description\": \"CWE-1050: Excessive Platform Resource Consumption within a Loop\"}]}], \"providerMetadata\": {\"orgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"shortName\": \"GitHub_M\", \"dateUpdated\": \"2026-01-27T18:10:27.881Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-22261\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-01-27T18:24:24.317Z\", \"dateReserved\": \"2026-01-07T05:19:12.923Z\", \"assignerOrgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"datePublished\": \"2026-01-27T18:10:27.881Z\", \"assignerShortName\": \"GitHub_M\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.


Loading…

Loading…

Loading…

Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Loading…

Detection rules are retrieved from Rulezet.

Loading…

Loading…

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.


Loading…