Consul vulnerable to an authorization bypass in health check registration

{
  "id": "2ef80ba81118625e4a3d05e1eda57b0799aa1c1bc213cf110bc015fcb808beec",
  "url": "https://www.cve.org/CVERecord?id=CVE-2026-115804",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Consul vulnerable to an authorization bypass in health check registration",
    "summary": "HashiCorp Consul and Consul Enterprise are vulnerable to an authorization bypass in health check registration that may allow an authenticated user to modify health checks belonging to another service on the same node. This vulnerability (CVE-2026-115804) is fixed in Consul Community Edition 2.1.0 and Consul Enterprise 2.1.0 and 1.21.19.",
    "evidence": "cve:CVE-2026-115804",
    "products": [
      {
        "name": {
          "value": "Consul",
          "evidence": "/containers/cna/affected/0/product"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      },
      {
        "name": {
          "value": "Consul Enterprise",
          "evidence": "/containers/cna/affected/1/product"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-115804",
      "aliases": [
        "CVE-2026-115804"
      ],
      "metrics": [
        {
          "format": "CVSS",
          "cvssV3_1": {
            "version": "3.1",
            "baseScore": 6.4,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:L"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "affected": [
        {
          "repo": "https://github.com/hashicorp/consul",
          "vendor": "HashiCorp",
          "product": "Consul",
          "versions": [
            {
              "status": "affected",
              "version": "0.7.2",
              "lessThan": "2.1.0",
              "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": "1.21.19",
                  "status": "unaffected"
                }
              ],
              "version": "0.7.2",
              "lessThan": "2.1.0",
              "versionType": "semver"
            }
          ],
          "platforms": [
            "64 bit",
            "32 bit",
            "x86",
            "ARM",
            "MacOS",
            "Windows",
            "Linux"
          ],
          "defaultStatus": "unaffected"
        }
      ],
      "modified": "2026-10-26T19:38:28.416Z",
      "provider": "cve",
      "references": [
        "https://discuss.hashicorp.com/t/hcsec-2026-49-consul-vulnerable-to-an-authorization-bypass-in-health-check-registration/77914"
      ],
      "provider_metadata": {
        "adp": [
          {
            "title": "CISA ADP Vulnrichment",
            "metrics": [
              {
                "other": {
                  "type": "ssvc",
                  "content": {
                    "id": "CVE-2026-115804",
                    "role": "CISA Coordinator",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "version": "2.0.3",
                    "timestamp": "2026-10-26T18:53:55.561242Z"
                  }
                }
              }
            ],
            "providerMetadata": {
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP",
              "dateUpdated": "2026-10-26T19:38:28.416Z"
            }
          }
        ],
        "cna": {
          "orgId": "67fedba0-ff2e-4543-ba5b-aa93e87718cc",
          "shortName": "HashiCorp",
          "dateUpdated": "2026-10-26T18:09:52.286Z"
        }
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-115804",
        "evidence": "/cveMetadata/cveId"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/containers/cna/metrics"
  },
  "source_id": "core-cve",
  "document_id": 338261,
  "published_at": "2026-10-26T18:09:52.286+00:00"
}