Uncontrolled resource consumption in the Consul Connect CA roots endpoint

{
  "id": "5a88ad6961271ecbb25f38d1d4f94b17f3d815f6a76d5b22d42dffed534c0fd2",
  "url": "https://osv.dev/vulnerability/CVE-2026-19015",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Uncontrolled resource consumption in the Consul Connect CA roots endpoint",
    "summary": "Consul Community Edition and Consul Enterprise 1.2.0 through 2.0.2 are vulnerable to an uncontrolled resource consumption issue in the Connect CA roots endpoint that may allow a remote caller to grow the agent's Connect CA roots cache without bound, defeating the operator's cache-disable configuration. This vulnerability, CVE-2026-19015, is fixed in Consul 2.0.3 and Consul Enterprise 1.21.17, 1.22.11, and 2.0.3.",
    "evidence": "osv:CVE-2026-19015",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-19015",
      "aliases": [
        "BIT-consul-2026-19015",
        "CVE-2026-19015"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/hashicorp/consul",
              "type": "GIT",
              "events": [
                {
                  "introduced": "28141971f966e99916da2c5e461dd968746491cd"
                },
                {
                  "fixed": "d0f2be936dced184d8bddc6f9dd00295f7c34f74"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "1.2.0"
                      },
                      {
                        "fixed": "2.0.3"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  }
                ]
              }
            }
          ],
          "versions": [
            "api/v1.34.3",
            "sdk/v0.18.1",
            "sdk/v0.18.0",
            "ent-changelog-1.22.0",
            "ent-changelog-1.20.9",
            "ent-changelog-1.20.8",
            "ent-changelog-1.20.13",
            "ent-changelog-1.20.12",
            "ent-changelog-1.20.11",
            "ent-changelog-1.20.10",
            "ent-changelog-1.20.0",
            "ent-changelog-1.19.13",
            "ent-changelog-1.19.12",
            "ent-changelog-1.19.11",
            "ent-changelog-1.19.10",
            "ent-changelog-1.19.0",
            "ent-changelog-1.18.17",
            "ent-changelog-1.18.16",
            "ent-changelog-1.18.15",
            "ent-changelog-1.18.14",
            "ent-changelog-1.18.13",
            "ent-changelog-1.18.12",
            "ent-changelog-1.18.0",
            "ent-changelog-1.17.0",
            "ent-changelog-1.16.0",
            "ent-changelog-1.15.19",
            "ent-changelog-1.15.0",
            "ent-changelog-1.14.0",
            "ent-changelog-1.13.0",
            "ent-changelog-1.12.0",
            "ent-changelog-1.11.0",
            "api/v1.32.1",
            "list",
            "proto-public/v0.1.1",
            "proto-public/v0.1.0",
            "api/v1.10.0",
            "v1.7.0",
            "sdk/v0.4.0",
            "api/v1.4.0",
            "v1.7.0-beta3",
            "v1.7.0-beta2",
            "v1.7.0-beta1",
            "v1.6.1",
            "v1.6.0",
            "api/v1.2.0",
            "sdk/v0.2.0",
            "v1.5.3",
            "v1.5.2",
            "v1.5.1",
            "v1.4.4",
            "v1.5.0",
            "api/v1.1.0",
            "sdk/v0.1.1",
            "api/v1.0.1",
            "sdk/v0.1.0",
            "api/v1.0.0",
            "internal/v0.1.0",
            "v1.4.3",
            "v1.4.2",
            "v1.4.1",
            "v1.2.3",
            "v1.4.0",
            "v1.4.0-rc1",
            "v1.2.2",
            "v1.2.1",
            "v1.2.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-19015.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:22.153707911Z",
      "provider": "osv",
      "references": [
        "https://discuss.hashicorp.com/t/hcsec-2026-25-multiple-vulnerabilities-impacting-hashicorp-consul/77629",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/19xxx/CVE-2026-19015.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-19015",
        "https://github.com/hashicorp/consul"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-770"
        ],
        "cna_assigner": "HashiCorp",
        "unresolved_ranges": [
          {
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "1.2.0"
                  },
                  {
                    "fixed": "1.21.17"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "ChangesAt"
              }
            ]
          }
        ],
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/19xxx/CVE-2026-19015.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-19015",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 488179,
  "published_at": "2026-08-07T19:19:11.407+00:00"
}