Vulnerability-Lookup

Vulnerability from bitnami_vulndb

Published

2026-08-17 05:38

Modified

2026-08-24 06:09

Summary

L7 intention authorization bypass via custom public listener

Details

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.

JSON

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Bitnami",
        "name": "consul",
        "purl": "pkg:bitnami/consul"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "1.20.1"
            },
            {
              "fixed": "2.0.3"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "severity": [
        {
          "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N",
          "type": "CVSS_V3"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-15970"
  ],
  "database_specific": {
    "cpes": [
      "cpe:2.3:a:hashicorp:consul:*:*:*:*:enterprise:*:*:*",
      "cpe:2.3:a:hashicorp:consul:*:*:*:*:community:go:*:*",
      "cpe:2.3:a:hashicorp:consul:*:*:*:*:enterprise:go:*:*"
    ],
    "severity": "Medium"
  },
  "details": "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.",
  "id": "BIT-consul-2026-15970",
  "modified": "2026-08-24T06:09:24.796Z",
  "published": "2026-08-17T05:38:02.117Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://discuss.hashicorp.com/t/hcsec-2026-25-multiple-vulnerabilities-impacting-hashicorp-consul/77629"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-15970"
    }
  ],
  "schema_version": "1.6.2",
  "summary": "L7 intention authorization bypass via custom public listener"
}

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

Vulnerability from cvelistv5 – Published: 2026-08-07 19:20 – Updated: 2026-08-10 18:24

Title

L7 intention authorization bypass via custom public listener

Summary

Severity

4.2 (Medium)


                        
                          CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-10 17:41 UTC

CWE

CWE-647 - Non-Canonical URL Authorization

Assigner

HashiCorp mitre root

References

1 reference

URL	Tags
https://discuss.hashicorp.com/t/hcsec-2026-25-mul…

Impacted products

2 products

Vendor	Product	Version
HashiCorp	Consul	Affected: 1.20.1 , < 2.0.3 (semver)
HashiCorp	Consul Enterprise	Affected: 1.20.1 , < 2.0.3 (semver)

Credits

This issue was reported by Erichen.

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-15970",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-10T17:41:15.231038Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-08-10T18:24:21.524Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
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          "defaultStatus": "unaffected",
          "platforms": [
            "64 bit",
            "32 bit",
            "x86",
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            "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": [
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            "32 bit",
            "x86",
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          ],
          "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": [
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            }
          ],
          "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"
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          "scenarios": [
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      "problemTypes": [
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            }
          ]
        }
      ],
      "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": {
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    "datePublished": "2026-08-07T19:20:13.639Z",
    "dateReserved": "2026-07-16T15:31:32.340Z",
    "dateUpdated": "2026-08-10T18:24:21.524Z",
    "state": "PUBLISHED"
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  "dataType": "CVE_RECORD",
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}

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

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Vulnerability from bitnami_vulndb

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

Tags

Sightings

Nomenclature