{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-86073",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-09-04T19:34:03.100Z",
        "datePublished": "2026-09-08T17:01:24.441Z",
        "dateUpdated": "2026-09-09T15:58:40.814Z"
    },
    "containers": {
        "cna": {
            "title": "n8n: Per-Resource OAuth Consent Bypass via Unbound Refresh Token Resource Substitution",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-863",
                            "lang": "en",
                            "description": "CWE-863: Incorrect Authorization",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV4_0": {
                        "attackVector": "NETWORK",
                        "attackComplexity": "LOW",
                        "attackRequirements": "PRESENT",
                        "privilegesRequired": "NONE",
                        "userInteraction": "ACTIVE",
                        "vulnConfidentialityImpact": "HIGH",
                        "vulnIntegrityImpact": "LOW",
                        "vulnAvailabilityImpact": "LOW",
                        "subConfidentialityImpact": "NONE",
                        "subIntegrityImpact": "NONE",
                        "subAvailabilityImpact": "NONE",
                        "baseScore": 5.9,
                        "baseSeverity": "MEDIUM",
                        "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N",
                        "version": "4.0"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/n8n-io/n8n/security/advisories/GHSA-cw9w-vv67-hf73",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/n8n-io/n8n/security/advisories/GHSA-cw9w-vv67-hf73"
                },
                {
                    "name": "https://github.com/n8n-io/n8n/pull/37122",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/n8n-io/n8n/pull/37122"
                },
                {
                    "name": "https://github.com/n8n-io/n8n/pull/37588",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/n8n-io/n8n/pull/37588"
                },
                {
                    "name": "https://github.com/n8n-io/n8n/commit/18458482861097a26f874f30ad7e8136e268475c",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/n8n-io/n8n/commit/18458482861097a26f874f30ad7e8136e268475c"
                },
                {
                    "name": "https://github.com/n8n-io/n8n/commit/380788fd9a3264c83161e868026a98731d274d88",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/n8n-io/n8n/commit/380788fd9a3264c83161e868026a98731d274d88"
                },
                {
                    "name": "https://github.com/n8n-io/n8n/releases/tag/n8n@2.37.7",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/n8n-io/n8n/releases/tag/n8n@2.37.7"
                },
                {
                    "name": "https://github.com/n8n-io/n8n/releases/tag/n8n@2.38.1",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/n8n-io/n8n/releases/tag/n8n@2.38.1"
                }
            ],
            "affected": [
                {
                    "vendor": "n8n-io",
                    "product": "n8n",
                    "versions": [
                        {
                            "version": "< 2.37.7",
                            "status": "affected"
                        },
                        {
                            "version": ">= 2.38.0, < 2.38.1",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-09-08T17:01:24.441Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "n8n is an open source workflow automation platform. Prior to 2.37.7 and 2.38.1, the OAuth token endpoint bound an authorization code's first access token to the consented resource but did not bind its refresh token. Refreshing checked only that the requested resource was registered, not that it matched the original grant. An OAuth client approved for one workflow could substitute a different workflow URL in the resource parameter and obtain a valid token for an unapproved workflow accessible to the consenting user. This issue is fixed in versions 2.37.7 and 2.38.1."
                }
            ],
            "source": {
                "advisory": "GHSA-cw9w-vv67-hf73",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-09-09T15:58:32.122740Z",
                                "id": "CVE-2026-86073",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "Technical Impact": "partial"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-09-09T15:58:40.814Z"
                }
            }
        ]
    }
}