{"id":"CVE-2026-63506","title":"Tina is a headless content management system","summary":"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 Tin…","severity":"high","cvss":8.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-639"],"vendor":"tinacms","product":"tinacms","affected":["tinacms < 1.1.4","auth < 1.1.4","next-tinacms-azure < 15.0.1"],"patched":["@tinacms/auth 1.1.4","next-tinacms-azure 15.0.1"],"published":"2026-09-16","updated":"2026-09-17","sourceUpdated":"2026-09-17T16:17:35.987","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-63506","references":[{"url":"https://github.com/tinacms/tinacms/commit/0a927a4f8d228dd05ee7ca4be32899bc190e73af","label":"security-advisories@github.com"},{"url":"https://github.com/tinacms/tinacms/pull/7168","label":"security-advisories@github.com"},{"url":"https://github.com/tinacms/tinacms/releases/tag/@tinacms/auth@1.1.4","label":"security-advisories@github.com"},{"url":"https://github.com/tinacms/tinacms/releases/tag/next-tinacms-azure@15.0.1","label":"security-advisories@github.com"},{"url":"https://github.com/tinacms/tinacms/security/advisories/GHSA-g74q-6g2f-874x","label":"security-advisories@github.com"},{"url":"https://github.com/tinacms/tinacms/security/advisories/GHSA-g74q-6g2f-874x","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-63506"},{"url":"https://github.com/advisories/GHSA-g74q-6g2f-874x"}],"tags":["nvd","cve.org","exploit-available","ghsa","npm"],"exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"total","timestamp":"2026-09-17T15:54:06.674922Z"},"aliases":["GHSA-g74q-6g2f-874x"],"ecosystem":"npm","ingestedAt":"2026-09-16T21:05:36.900Z","epss":0.00488,"epssPercentile":0.41092,"slug":"CVE-2026-63506","body":"## Overview\n\nTina 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Package advisory (CVE-2026-63506)\n\nAffected packages:\n\n- `@tinacms/auth <= 1.1.3`\n- `next-tinacms-azure <= 15.0.0`\n\nPatched in:\n\n- `@tinacms/auth 1.1.4`\n- `next-tinacms-azure 15.0.1`\n\nSource: https://github.com/advisories/GHSA-g74q-6g2f-874x","depth":"midnight","depthScore":60,"depthScoreParts":{"impact":48.4,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[{"seq":206259,"id":"CVE-2026-63506","ts":1789662163866,"field":"exploit_available","old":"false","new":"true"}]}