Vulnerability-Lookup

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

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

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

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

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FKIE_CVE-2026-15970

Vulnerability from fkie_nvd - Published: 2026-08-07 20:16 - Updated: 2026-08-10 19:17

Severity

4.2 (Medium) - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N

Summary

References

	URL	Tags
	security@hashicorp.com	https://discuss.hashicorp.com/t/hcsec-2026-25-multiple-vulnerabilities-impacting-hashicorp-consul/77629

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "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"
            }
          ]
        }
      ],
      "source": "security@hashicorp.com"
    }
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    }
  ],
  "id": "CVE-2026-15970",
  "lastModified": "2026-08-10T19:17:28.930",
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GHSA-H928-JQXM-5F3X

Vulnerability from github – Published: 2026-08-07 21:30 – Updated: 2026-08-07 21:30

Details

Severity

4.2 (Medium)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-15970"
  ],
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      "CWE-647"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-07T20:16:49Z",
    "severity": "MODERATE"
  },
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  "id": "GHSA-h928-jqxm-5f3x",
  "modified": "2026-08-07T21:30:37Z",
  "published": "2026-08-07T21:30:37Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-15970"
    },
    {
      "type": "WEB",
      "url": "https://discuss.hashicorp.com/t/hcsec-2026-25-multiple-vulnerabilities-impacting-hashicorp-consul/77629"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
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      "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ]
}

ubuntu-cve-2026-15970

Vulnerability from osv_ubuntu

Published

2026-08-07 20:16

Modified

2026-08-13 00:02

Summary

Details

Severity

4.2 (Medium)


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

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-15970	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-15970	REPORT
	https://discuss.hashicorp.com/t/hcsec-2026-25-mul…	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "consul",
            "binary_version": "0.6.4~dfsg-3"
          },
          {
            "binary_name": "golang-github-hashicorp-consul-dev",
            "binary_version": "0.6.4~dfsg-3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "consul",
        "purl": "pkg:deb/ubuntu/consul@0.6.4~dfsg-3?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.6.4~dfsg-3"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "consul",
            "binary_version": "1.5.2+dfsg2-14"
          },
          {
            "binary_name": "golang-github-hashicorp-consul-dev",
            "binary_version": "1.5.2+dfsg2-14"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "consul",
        "purl": "pkg:deb/ubuntu/consul@1.5.2+dfsg2-14?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
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          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.0.7~dfsg1-5ubuntu1",
        "1.4.4~dfsg1-2ubuntu2",
        "1.5.2+dfsg1-6",
        "1.5.2+dfsg1-10",
        "1.5.2+dfsg1-12",
        "1.5.2+dfsg2-14"
      ]
    },
    {
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          {
            "binary_name": "consul",
            "binary_version": "1.8.7+dfsg1-3"
          },
          {
            "binary_name": "golang-github-hashicorp-consul-dev",
            "binary_version": "1.8.7+dfsg1-3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "consul",
        "purl": "pkg:deb/ubuntu/consul@1.8.7+dfsg1-3?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.7.4+dfsg1-1",
        "1.8.7+dfsg1-3"
      ]
    }
  ],
  "aliases": [],
  "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": "UBUNTU-CVE-2026-15970",
  "modified": "2026-08-13T00:02:18Z",
  "published": "2026-08-07T20:16:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-15970"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-15970"
    },
    {
      "type": "REPORT",
      "url": "https://discuss.hashicorp.com/t/hcsec-2026-25-multiple-vulnerabilities-impacting-hashicorp-consul/77629"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-15970"
  ]
}

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.

Action not permitted

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

FKIE_CVE-2026-15970

GHSA-H928-JQXM-5F3X

ubuntu-cve-2026-15970

Vulnerability from osv_ubuntu

Tags

Sightings

Nomenclature