CVE-2026-15970 (GCVE-0-2026-15970)

Vulnerability from cvelistv5 – Published: 2026-08-07 19:20 – Updated: 2026-08-07 19:20
VLAI
Title
L7 intention authorization bypass via custom public listener
Summary
Consul Community Edition and Consul Enterprise 1.20.1 through 2.0.2 are vulnerable to an L7 intention authorization bypass when a service proxy is configured with a custom public listener. An authenticated mesh workload may reach HTTP paths that are blocked by a path-based deny intention. This vulnerability, CVE-2026-15970, is fixed in Consul 2.0.3 and Consul Enterprise 1.21.17, 1.22.11, and 2.0.3.
Severity
4.2 (Medium)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N
CWE
  • CWE-647 - Non-Canonical URL Authorization
Assigner
References
Impacted products
Vendor Product Version
HashiCorp Consul Affected: 1.20.1 , < 2.0.3 (semver)
Create a notification for this product.
HashiCorp Consul Enterprise Affected: 1.20.1 , < 2.0.3 (semver)
Create a notification for this product.
Credits
This issue was reported by Erichen.
Show details on NVD website
To clipboard 

{
  "containers": {
    "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": "2.0.3",
              "status": "affected",
              "version": "1.20.1",
              "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": "1.21.17",
                  "status": "unaffected"
                },
                {
                  "at": "1.22.11",
                  "status": "unaffected"
                }
              ],
              "lessThan": "2.0.3",
              "status": "affected",
              "version": "1.20.1",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "This issue was reported by Erichen."
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cp\u003eConsul Community Edition and Consul Enterprise 1.20.1 through 2.0.2 are vulnerable to an L7 intention authorization bypass when a service proxy is configured with a custom public listener. An authenticated mesh workload may reach HTTP paths that are blocked by a path-based deny intention. This vulnerability, CVE-2026-15970, is fixed in Consul 2.0.3 and Consul Enterprise 1.21.17, 1.22.11, and 2.0.3.\u003c/p\u003e\u003cbr/\u003e"
            }
          ],
          "value": "Consul Community Edition and Consul Enterprise 1.20.1 through 2.0.2 are vulnerable to an L7 intention authorization bypass when a service proxy is configured with a custom public listener. An authenticated mesh workload may reach HTTP paths that are blocked by a path-based deny intention. This vulnerability, CVE-2026-15970, is fixed in Consul 2.0.3 and Consul Enterprise 1.21.17, 1.22.11, and 2.0.3."
        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-1",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-1: Accessing Functionality Not Properly Constrained by ACLs"
            }
          ]
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 4.2,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-647",
              "description": "CWE-647: Non-Canonical URL Authorization",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-07T19:20:13.639Z",
        "orgId": "67fedba0-ff2e-4543-ba5b-aa93e87718cc",
        "shortName": "HashiCorp"
      },
      "references": [
        {
          "url": "https://discuss.hashicorp.com/t/hcsec-2026-25-multiple-vulnerabilities-impacting-hashicorp-consul/77629"
        }
      ],
      "source": {
        "advisory": "HCSEC-2026-25",
        "discovery": "EXTERNAL"
      },
      "title": "L7 intention authorization bypass via custom public listener"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "67fedba0-ff2e-4543-ba5b-aa93e87718cc",
    "assignerShortName": "HashiCorp",
    "cveId": "CVE-2026-15970",
    "datePublished": "2026-08-07T19:20:13.639Z",
    "dateReserved": "2026-07-16T15:31:32.340Z",
    "dateUpdated": "2026-08-07T19:20:13.639Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-15970",
      "date": "2026-08-08",
      "epss": "0.00159",
      "percentile": "0.05558"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-15970\",\"sourceIdentifier\":\"security@hashicorp.com\",\"published\":\"2026-08-07T20:16:49.863\",\"lastModified\":\"2026-08-07T20:16:49.863\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Consul Community Edition and Consul Enterprise 1.20.1 through 2.0.2 are vulnerable to an L7 intention authorization bypass when a service proxy is configured with a custom public listener. An authenticated mesh workload may reach HTTP paths that are blocked by a path-based deny intention. This vulnerability, CVE-2026-15970, is fixed in Consul 2.0.3 and Consul Enterprise 1.21.17, 1.22.11, and 2.0.3.\"}],\"affected\":[{\"source\":\"security@hashicorp.com\",\"affectedData\":[{\"vendor\":\"HashiCorp\",\"product\":\"Consul\",\"defaultStatus\":\"unaffected\",\"platforms\":[\"64 bit\",\"32 bit\",\"x86\",\"ARM\",\"MacOS\",\"Windows\",\"Linux\"],\"repo\":\"https://github.com/hashicorp/consul\",\"versions\":[{\"version\":\"1.20.1\",\"lessThan\":\"2.0.3\",\"versionType\":\"semver\",\"status\":\"affected\"}]},{\"vendor\":\"HashiCorp\",\"product\":\"Consul Enterprise\",\"defaultStatus\":\"unaffected\",\"platforms\":[\"64 bit\",\"32 bit\",\"x86\",\"ARM\",\"MacOS\",\"Windows\",\"Linux\"],\"repo\":\"https://github.com/hashicorp/consul\",\"versions\":[{\"version\":\"1.20.1\",\"lessThan\":\"2.0.3\",\"versionType\":\"semver\",\"status\":\"affected\",\"changes\":[{\"at\":\"1.21.17\",\"status\":\"unaffected\"},{\"at\":\"1.22.11\",\"status\":\"unaffected\"}]}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security@hashicorp.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N\",\"baseScore\":4.2,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"LOW\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":1.6,\"impactScore\":2.5}]},\"weaknesses\":[{\"source\":\"security@hashicorp.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-647\"}]}],\"references\":[{\"url\":\"https://discuss.hashicorp.com/t/hcsec-2026-25-multiple-vulnerabilities-impacting-hashicorp-consul/77629\",\"source\":\"security@hashicorp.com\"}]}}"
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





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.


Detection rules are retrieved from Rulezet.