{"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"}}]}}

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