{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-63203",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-07-15T22:19:06.905Z",
        "datePublished": "2026-09-24T15:18:32.273Z",
        "dateUpdated": "2026-09-24T15:47:41.056Z"
    },
    "containers": {
        "cna": {
            "title": "Logto: Account API can disclose stored third-party provider tokens without the identities scope",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-862",
                            "lang": "en",
                            "description": "CWE-862: Missing Authorization",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "LOW",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "NONE",
                        "baseScore": 7.6,
                        "baseSeverity": "HIGH",
                        "confidentialityImpact": "HIGH",
                        "integrityImpact": "LOW",
                        "privilegesRequired": "LOW",
                        "scope": "CHANGED",
                        "userInteraction": "REQUIRED",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/logto-io/logto/security/advisories/GHSA-6g9q-qrx7-3jxf",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/logto-io/logto/security/advisories/GHSA-6g9q-qrx7-3jxf"
                },
                {
                    "name": "https://github.com/logto-io/logto/pull/9116",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/logto-io/logto/pull/9116"
                },
                {
                    "name": "https://github.com/logto-io/logto/commit/b560d17a4da4c25da95e3c73af4485d18ab7c224",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/logto-io/logto/commit/b560d17a4da4c25da95e3c73af4485d18ab7c224"
                },
                {
                    "name": "https://github.com/logto-io/logto/releases/tag/v1.42.0",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/logto-io/logto/releases/tag/v1.42.0"
                }
            ],
            "affected": [
                {
                    "vendor": "logto-io",
                    "product": "logto",
                    "versions": [
                        {
                            "version": ">= 1.31.0, < 1.42.0",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-09-24T15:18:32.273Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "Logto is the modern, open-source auth infrastructure for SaaS and AI apps. From 1.31.0 until 1.42.0, the Account API handlers in packages/core/src/routes/account/third-party-tokens.ts allow a caller holding a same-user access token with only the openid scope to retrieve stored social or enterprise SSO provider access tokens through GET /api/my-account/identities/{target}/access-token or GET /api/my-account/sso-identities/{connectorId}/access-token. The handlers authenticate the user but do not require the identities scope that protects neighboring identity-detail operations, bypassing the intended Account API consent boundary. Exploitation requires federated token-set storage to be enabled and the affected user to have authenticated through a supported connector. A low-trust application can use the disclosed provider token against upstream APIs within that token's granted scopes. This issue is fixed in version 1.42.0."
                }
            ],
            "source": {
                "advisory": "GHSA-6g9q-qrx7-3jxf",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "references": [
                    {
                        "url": "https://github.com/logto-io/logto/security/advisories/GHSA-6g9q-qrx7-3jxf",
                        "tags": [
                            "exploit"
                        ]
                    }
                ],
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-09-24T15:47:15.549514Z",
                                "id": "CVE-2026-63203",
                                "options": [
                                    {
                                        "Exploitation": "poc"
                                    },
                                    {
                                        "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": "2026-09-24T15:47:41.056Z"
                }
            }
        ]
    }
}