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vuln-cve/data/2026/63xxx/CVE-2026-63203.json
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{
"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"
}
}
]
}
}