CVE-2025-11375 (GCVE-0-2025-11375)

Vulnerability from cvelistv5 – Published: 2025-10-28 20:12 – Updated: 2025-12-09 01:37
VLAI?
Title
Consul's event endpoint is vulnerable to denial of service
Summary
Consul and Consul Enterprise’s (“Consul”) event endpoint is vulnerable to denial of service (DoS) due to lack of maximum value on the Content Length header. This vulnerability, CVE-2025-11375, is fixed in Consul Community Edition 1.22.0 and Consul Enterprise 1.22.0, 1.21.6, 1.20.8 and 1.18.12.
Severity ?
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
References
Impacted products
Vendor Product Version
HashiCorp Consul Affected: 0 , < 1.22.0 (semver)
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-11375",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-10-29T17:34:13.959341Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-10-29T17:34:25.690Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "platforms": [
            "64 bit",
            "32 bit",
            "x86",
            "ARM",
            "MacOS",
            "Windows",
            "Linux"
          ],
          "product": "Consul",
          "repo": "https://github.com/hashicorp/consul",
          "vendor": "HashiCorp",
          "versions": [
            {
              "lessThan": "1.22.0",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "platforms": [
            "64 bit",
            "32 bit",
            "x86",
            "ARM",
            "MacOS",
            "Windows",
            "Linux"
          ],
          "product": "Consul Enterprise",
          "repo": "https://github.com/hashicorp/consul",
          "vendor": "HashiCorp",
          "versions": [
            {
              "changes": [
                {
                  "at": "1.21.6",
                  "status": "unaffected"
                },
                {
                  "at": "1.20.8",
                  "status": "unaffected"
                },
                {
                  "at": "1.18.12",
                  "status": "unaffected"
                }
              ],
              "lessThan": "1.22.0",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cp\u003eConsul and Consul Enterprise\u2019s (\u201cConsul\u201d) event endpoint is vulnerable to denial of service (DoS) due to lack of maximum value on the Content Length header. This vulnerability, CVE-2025-11375, is fixed in Consul Community Edition 1.22.0 and Consul Enterprise 1.22.0, 1.21.6, 1.20.8 and 1.18.12.\u003c/p\u003e\u003cbr/\u003e"
            }
          ],
          "value": "Consul and Consul Enterprise\u2019s (\u201cConsul\u201d) event endpoint is vulnerable to denial of service (DoS) due to lack of maximum value on the Content Length header. This vulnerability, CVE-2025-11375, is fixed in Consul Community Edition 1.22.0 and Consul Enterprise 1.22.0, 1.21.6, 1.20.8 and 1.18.12."
        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-469",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-469: HTTP DoS"
            }
          ]
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-770",
              "description": "CWE-770: Allocation of Resources Without Limits or Throttling",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-12-09T01:37:57.188Z",
        "orgId": "67fedba0-ff2e-4543-ba5b-aa93e87718cc",
        "shortName": "HashiCorp"
      },
      "references": [
        {
          "url": "https://discuss.hashicorp.com/t/hcsec-2025-28-consuls-event-endpoint-is-vulnerable-to-denial-of-service/76723"
        }
      ],
      "source": {
        "advisory": "HCSEC-2025-28",
        "discovery": "EXTERNAL"
      },
      "title": "Consul\u0027s event endpoint is vulnerable to denial of service"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "67fedba0-ff2e-4543-ba5b-aa93e87718cc",
    "assignerShortName": "HashiCorp",
    "cveId": "CVE-2025-11375",
    "datePublished": "2025-10-28T20:12:14.325Z",
    "dateReserved": "2025-10-06T15:34:11.889Z",
    "dateUpdated": "2025-12-09T01:37:57.188Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-11375\",\"sourceIdentifier\":\"security@hashicorp.com\",\"published\":\"2025-10-28T21:15:37.470\",\"lastModified\":\"2025-12-22T15:55:08.583\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Consul and Consul Enterprise\u2019s (\u201cConsul\u201d) event endpoint is vulnerable to denial of service (DoS) due to lack of maximum value on the Content Length header. This vulnerability, CVE-2025-11375, is fixed in Consul Community Edition 1.22.0 and Consul Enterprise 1.22.0, 1.21.6, 1.20.8 and 1.18.12.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security@hashicorp.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":6.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":2.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"security@hashicorp.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-770\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:hashicorp:consul:*:*:*:*:enterprise:*:*:*\",\"versionEndExcluding\":\"1.18.12\",\"matchCriteriaId\":\"DE3AEC9A-D84F-4B7C-9B03-D3B8CE2CD319\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:hashicorp:consul:*:*:*:*:-:*:*:*\",\"versionEndExcluding\":\"1.22.0\",\"matchCriteriaId\":\"BD19A817-7366-4C2E-ADF9-35DC889EFE58\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:hashicorp:consul:*:*:*:*:enterprise:*:*:*\",\"versionStartIncluding\":\"1.19.0\",\"versionEndExcluding\":\"1.20.8\",\"matchCriteriaId\":\"596686CD-4DE0-4C9A-83CC-F07B0D2014DB\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:hashicorp:consul:*:*:*:*:enterprise:*:*:*\",\"versionStartIncluding\":\"1.21.0\",\"versionEndExcluding\":\"1.21.6\",\"matchCriteriaId\":\"8B688D66-7E0A-4969-9187-D5374EDF68B9\"}]}]}],\"references\":[{\"url\":\"https://discuss.hashicorp.com/t/hcsec-2025-28-consuls-event-endpoint-is-vulnerable-to-denial-of-service/76723\",\"source\":\"security@hashicorp.com\",\"tags\":[\"Vendor Advisory\"]}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2025-11375\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-10-29T17:34:13.959341Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-10-29T17:34:21.069Z\"}}], \"cna\": {\"title\": \"Consul\u0027s event endpoint is vulnerable to denial of service\", \"source\": {\"advisory\": \"HCSEC-2025-28\", \"discovery\": \"EXTERNAL\"}, \"impacts\": [{\"capecId\": \"CAPEC-469\", \"descriptions\": [{\"lang\": \"en\", \"value\": \"CAPEC-469: HTTP DoS\"}]}], \"metrics\": [{\"format\": \"CVSS\", \"cvssV3_1\": {\"version\": \"3.1\", \"baseScore\": 6.5, \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"GENERAL\"}]}], \"affected\": [{\"repo\": \"https://github.com/hashicorp/consul\", \"vendor\": \"HashiCorp\", \"product\": \"Consul\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"lessThan\": \"1.22.0\", \"versionType\": \"semver\"}], \"platforms\": [\"64 bit\", \"32 bit\", \"x86\", \"ARM\", \"MacOS\", \"Windows\", \"Linux\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://github.com/hashicorp/consul\", \"vendor\": \"HashiCorp\", \"product\": \"Consul Enterprise\", \"versions\": [{\"status\": \"affected\", \"changes\": [{\"at\": \"1.21.6\", \"status\": \"unaffected\"}, {\"at\": \"1.20.8\", \"status\": \"unaffected\"}, {\"at\": \"1.18.12\", \"status\": \"unaffected\"}], \"version\": \"0\", \"lessThan\": \"1.22.0\", \"versionType\": \"semver\"}], \"platforms\": [\"64 bit\", \"32 bit\", \"x86\", \"ARM\", \"MacOS\", \"Windows\", \"Linux\"], \"defaultStatus\": \"unaffected\"}], \"references\": [{\"url\": \"https://discuss.hashicorp.com/t/hcsec-2025-28-consuls-event-endpoint-is-vulnerable-to-denial-of-service/76723\"}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"Consul and Consul Enterprise\\u2019s (\\u201cConsul\\u201d) event endpoint is vulnerable to denial of service (DoS) due to lack of maximum value on the Content Length header. This vulnerability, CVE-2025-11375, is fixed in Consul Community Edition 1.22.0 and Consul Enterprise 1.22.0, 1.21.6, 1.20.8 and 1.18.12.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"\u003cp\u003eConsul and Consul Enterprise\\u2019s (\\u201cConsul\\u201d) event endpoint is vulnerable to denial of service (DoS) due to lack of maximum value on the Content Length header. This vulnerability, CVE-2025-11375, is fixed in Consul Community Edition 1.22.0 and Consul Enterprise 1.22.0, 1.21.6, 1.20.8 and 1.18.12.\u003c/p\u003e\u003cbr/\u003e\", \"base64\": false}]}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-770\", \"description\": \"CWE-770: Allocation of Resources Without Limits or Throttling\"}]}], \"providerMetadata\": {\"orgId\": \"67fedba0-ff2e-4543-ba5b-aa93e87718cc\", \"shortName\": \"HashiCorp\", \"dateUpdated\": \"2025-12-09T01:37:57.188Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2025-11375\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-12-09T01:37:57.188Z\", \"dateReserved\": \"2025-10-06T15:34:11.889Z\", \"assignerOrgId\": \"67fedba0-ff2e-4543-ba5b-aa93e87718cc\", \"datePublished\": \"2025-10-28T20:12:14.325Z\", \"assignerShortName\": \"HashiCorp\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

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.



Detection rules are retrieved from Rulezet.