{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-63506", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-07-16T21:49:52.069Z", "datePublished": "2026-09-16T20:27:37.385Z", "dateUpdated": "2026-09-17T15:54:38.071Z"}, "containers": {"cna": {"title": "Tina: [Broken Access Control] letting any TinaCloud user authorize against any self-hosted site", "problemTypes": [{"descriptions": [{"cweId": "CWE-639", "lang": "en", "description": "CWE-639: Authorization Bypass Through User-Controlled Key", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}}], "references": [{"name": "https://github.com/tinacms/tinacms/security/advisories/GHSA-g74q-6g2f-874x", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/tinacms/tinacms/security/advisories/GHSA-g74q-6g2f-874x"}, {"name": "https://github.com/tinacms/tinacms/pull/7168", "tags": ["x_refsource_MISC"], "url": "https://github.com/tinacms/tinacms/pull/7168"}, {"name": "https://github.com/tinacms/tinacms/commit/0a927a4f8d228dd05ee7ca4be32899bc190e73af", "tags": ["x_refsource_MISC"], "url": "https://github.com/tinacms/tinacms/commit/0a927a4f8d228dd05ee7ca4be32899bc190e73af"}, {"name": "https://github.com/tinacms/tinacms/releases/tag/@tinacms/auth@1.1.4", "tags": ["x_refsource_MISC"], "url": "https://github.com/tinacms/tinacms/releases/tag/@tinacms/auth@1.1.4"}, {"name": "https://github.com/tinacms/tinacms/releases/tag/next-tinacms-azure@15.0.1", "tags": ["x_refsource_MISC"], "url": "https://github.com/tinacms/tinacms/releases/tag/next-tinacms-azure@15.0.1"}], "affected": [{"vendor": "tinacms", "product": "tinacms", "versions": [{"version": "< 1.1.4", "status": "affected"}]}, {"vendor": "@tinacms", "product": "auth", "versions": [{"version": "< 1.1.4", "status": "affected"}]}, {"vendor": "tinacms", "product": "next-tinacms-azure", "versions": [{"version": "< 15.0.1", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-09-16T20:27:37.385Z"}, "descriptions": [{"lang": "en", "value": "Tina is a headless content management system. Prior to @tinacms/auth 1.1.4 and next-tinacms-azure 15.0.1, isAuthorized accepts a request-controlled clientID and asks isUserAuthorized to validate the bearer token against that selected TinaCloud app instead of the self-hosted site's configured app. An attacker with any TinaCloud account can submit the attacker's own app ID and valid token to a victim endpoint, causing TinaCloudBackendAuthProvider or an affected media authorized callback to accept the attacker's verified status across the tenant boundary. The vulnerable logic is present in packages/@tinacms/auth/src/index.ts and packages/next-tinacms-azure/src/auth.ts. Successful exploitation permits media listing, reading, upload, or deletion and, when TinaCloudBackendAuthProvider is used, GraphQL read, create, update, and delete operations on the victim's content without a victim account or victim interaction. This vulnerability is fixed in @tinacms/auth 1.1.4 and next-tinacms-azure 15.0.1."}], "source": {"advisory": "GHSA-g74q-6g2f-874x", "discovery": "UNKNOWN"}}, "adp": [{"references": [{"url": "https://github.com/tinacms/tinacms/security/advisories/GHSA-g74q-6g2f-874x", "tags": ["exploit"]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-09-17T15:54:06.674922Z", "id": "CVE-2026-63506", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-09-17T15:54:38.071Z"}}]}}

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