CVE-2026-87107 (GCVE-0-2026-87107)

Vulnerability from cvelistv5 – Published: 2026-09-10 18:57 – Updated: 2026-09-10 19:22
VLAI
Title
Consul vulnerable to an authorization bypass in the catalog deregistration path
Summary
Consul and Consul Enterprise are vulnerable to an authorization bypass in the catalog deregistration path that may allow a local ACL token to delete peer-imported catalog objects. A caller with {{service:write}} or {{node:write}} permission may exploit this issue to remove services, checks, or nodes imported from a peered cluster without holding authority over the peer origin. This vulnerability (CVE-2026-87107) is fixed in Consul 2.0.4 and Consul Enterprise 1.21.18, 1.22.12 and 2.0.4.
Severity
5.4 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-10 19:21 UTC
CWE
  • CWE-863 - Incorrect Authorization
Assigner
HashiCorp CNA under the mitre root
CNA scorecard C 70/100 over 41 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
HashiCorp Consul Affected: 1.21.0 , < 2.0.4 (semver)
guessed Create a notification for this product.
HashiCorp Consul Enterprise Affected: 1.21.0 , < 2.0.4 (semver)
guessed Create a notification for this product.
Credits
This issue was reported to HashiCorp by Yazdan Soltani.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-87107",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-09-10T19:21:57.382969Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-09-10T19:22:09.223Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "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": "2.0.4",
              "status": "affected",
              "version": "1.21.0",
              "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": "1.21.18",
                  "status": "unaffected"
                },
                {
                  "at": "1.22.12",
                  "status": "unaffected"
                }
              ],
              "lessThan": "2.0.4",
              "status": "affected",
              "version": "1.21.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "This issue was reported to HashiCorp by Yazdan Soltani."
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cp\u003eConsul and Consul Enterprise are vulnerable to an authorization bypass in the catalog deregistration path that may allow a local ACL token to delete peer-imported catalog objects. A caller with {{service:write}} or {{node:write}} permission may exploit this issue to remove services, checks, or nodes imported from a peered cluster without holding authority over the peer origin. This vulnerability (CVE-2026-87107) is fixed in Consul 2.0.4 and Consul Enterprise 1.21.18, 1.22.12 and 2.0.4.\u003c/p\u003e\u003cbr/\u003e"
            }
          ],
          "value": "Consul and Consul Enterprise are vulnerable to an authorization bypass in the catalog deregistration path that may allow a local ACL token to delete peer-imported catalog objects. A caller with {{service:write}} or {{node:write}} permission may exploit this issue to remove services, checks, or nodes imported from a peered cluster without holding authority over the peer origin. This vulnerability (CVE-2026-87107) is fixed in Consul 2.0.4 and Consul Enterprise 1.21.18, 1.22.12 and 2.0.4."
        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-1",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-1: Accessing Functionality Not Properly Constrained by ACLs"
            }
          ]
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 5.4,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-863",
              "description": "CWE-863: Incorrect Authorization",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-10T18:57:35.812Z",
        "orgId": "67fedba0-ff2e-4543-ba5b-aa93e87718cc",
        "shortName": "HashiCorp"
      },
      "references": [
        {
          "url": "https://discuss.hashicorp.com/t/hcsec-2026-36-consul-vulnerable-to-an-authorization-bypass-in-the-catalog-deregistration-path/77738"
        }
      ],
      "source": {
        "advisory": "HCSEC-2026-36",
        "discovery": "EXTERNAL"
      },
      "title": "Consul vulnerable to an authorization bypass in the catalog deregistration path"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "67fedba0-ff2e-4543-ba5b-aa93e87718cc",
    "assignerShortName": "HashiCorp",
    "cveId": "CVE-2026-87107",
    "datePublished": "2026-09-10T18:57:35.812Z",
    "dateReserved": "2026-09-08T20:24:18.555Z",
    "dateUpdated": "2026-09-10T19:22:09.223Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-87107",
      "date": "2026-10-15",
      "epss": "0.00314",
      "percentile": "0.22686"
    },
    "nvd": {
      "cve": {
        "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": "2.0.4",
                    "status": "affected",
                    "version": "1.21.0",
                    "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": "1.21.18",
                        "status": "unaffected"
                      },
                      {
                        "at": "1.22.12",
                        "status": "unaffected"
                      }
                    ],
                    "lessThan": "2.0.4",
                    "status": "affected",
                    "version": "1.21.0",
                    "versionType": "semver"
                  }
                ]
              }
            ],
            "source": "security@hashicorp.com"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "Consul and Consul Enterprise are vulnerable to an authorization bypass in the catalog deregistration path that may allow a local ACL token to delete peer-imported catalog objects. A caller with {{service:write}} or {{node:write}} permission may exploit this issue to remove services, checks, or nodes imported from a peered cluster without holding authority over the peer origin. This vulnerability (CVE-2026-87107) is fixed in Consul 2.0.4 and Consul Enterprise 1.21.18, 1.22.12 and 2.0.4."
          }
        ],
        "id": "CVE-2026-87107",
        "lastModified": "2026-09-10T20:17:29.083",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "LOW",
                "baseScore": 5.4,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "LOW",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L",
                "version": "3.1"
              },
              "exploitabilityScore": 2.8,
              "impactScore": 2.5,
              "source": "security@hashicorp.com",
              "type": "Secondary"
            }
          ],
          "ssvcV203": [
            {
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "ssvcData": {
                "id": "CVE-2026-87107",
                "options": [
                  {
                    "exploitation": "none"
                  },
                  {
                    "automatable": "no"
                  },
                  {
                    "technicalImpact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-09-10T19:21:57.382969Z",
                "version": "2.0.3"
              }
            }
          ]
        },
        "published": "2026-09-10T19:17:37.413",
        "references": [
          {
            "source": "security@hashicorp.com",
            "url": "https://discuss.hashicorp.com/t/hcsec-2026-36-consul-vulnerable-to-an-authorization-bypass-in-the-catalog-deregistration-path/77738"
          }
        ],
        "sourceIdentifier": "security@hashicorp.com",
        "vulnStatus": "Awaiting Analysis",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-863"
              }
            ],
            "source": "security@hashicorp.com",
            "type": "Secondary"
          }
        ]
      }
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2026-87107",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2026-09-10T19:21:57.382969Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2026-09-10T19:22:02.716Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "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": "2.0.4",
                  "status": "affected",
                  "version": "1.21.0",
                  "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": "1.21.18",
                      "status": "unaffected"
                    },
                    {
                      "at": "1.22.12",
                      "status": "unaffected"
                    }
                  ],
                  "lessThan": "2.0.4",
                  "status": "affected",
                  "version": "1.21.0",
                  "versionType": "semver"
                }
              ]
            }
          ],
          "credits": [
            {
              "lang": "en",
              "value": "This issue was reported to HashiCorp by Yazdan Soltani."
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "supportingMedia": [
                {
                  "base64": false,
                  "type": "text/html",
                  "value": "\u003cp\u003eConsul and Consul Enterprise are vulnerable to an authorization bypass in the catalog deregistration path that may allow a local ACL token to delete peer-imported catalog objects. A caller with {{service:write}} or {{node:write}} permission may exploit this issue to remove services, checks, or nodes imported from a peered cluster without holding authority over the peer origin. This vulnerability (CVE-2026-87107) is fixed in Consul 2.0.4 and Consul Enterprise 1.21.18, 1.22.12 and 2.0.4.\u003c/p\u003e\u003cbr/\u003e"
                }
              ],
              "value": "Consul and Consul Enterprise are vulnerable to an authorization bypass in the catalog deregistration path that may allow a local ACL token to delete peer-imported catalog objects. A caller with {{service:write}} or {{node:write}} permission may exploit this issue to remove services, checks, or nodes imported from a peered cluster without holding authority over the peer origin. This vulnerability (CVE-2026-87107) is fixed in Consul 2.0.4 and Consul Enterprise 1.21.18, 1.22.12 and 2.0.4."
            }
          ],
          "impacts": [
            {
              "capecId": "CAPEC-1",
              "descriptions": [
                {
                  "lang": "en",
                  "value": "CAPEC-1: Accessing Functionality Not Properly Constrained by ACLs"
                }
              ]
            }
          ],
          "metrics": [
            {
              "cvssV3_1": {
                "baseScore": 5.4,
                "baseSeverity": "MEDIUM",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L",
                "version": "3.1"
              },
              "format": "CVSS",
              "scenarios": [
                {
                  "lang": "en",
                  "value": "GENERAL"
                }
              ]
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-863",
                  "description": "CWE-863: Incorrect Authorization",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-09-10T18:57:35.812Z",
            "orgId": "67fedba0-ff2e-4543-ba5b-aa93e87718cc",
            "shortName": "HashiCorp"
          },
          "references": [
            {
              "url": "https://discuss.hashicorp.com/t/hcsec-2026-36-consul-vulnerable-to-an-authorization-bypass-in-the-catalog-deregistration-path/77738"
            }
          ],
          "source": {
            "advisory": "HCSEC-2026-36",
            "discovery": "EXTERNAL"
          },
          "title": "Consul vulnerable to an authorization bypass in the catalog deregistration path"
        }
      },
      "cveMetadata": {
        "assignerOrgId": "67fedba0-ff2e-4543-ba5b-aa93e87718cc",
        "assignerShortName": "HashiCorp",
        "cveId": "CVE-2026-87107",
        "datePublished": "2026-09-10T18:57:35.812Z",
        "dateReserved": "2026-09-08T20:24:18.555Z",
        "dateUpdated": "2026-09-10T19:22:09.223Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

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.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

JSON

Loading timeline…




    Related by attack behaviour

    Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.