{"id":"EUVD-2026-95990","revision":"c2c76b5151004e32bfc6069ea1ef7d6e","records":[{"revision":"c2c76b5151004e32bfc6069ea1ef7d6e","observedAt":"2026-10-28T00:52:05.803+00:00","statement":{"source":"euvd","id":"EUVD-2026-95990","aliases":["CVE-2026-108261","GHSA-x34j-47hf-4xg7"],"title":"Tina is a headless content management system. Prior to tinacms 3.14.0 and @tinacms/app 2.5.14, the /~/* admin preview route in packages/tinacms/src/admin/index.tsx can turn an attacker-controlled hash-router splat into an off-origin iframe …","description":"Tina is a headless content management system. Prior to tinacms 3.14.0 and @tinacms/app 2.5.14, the /~/* admin preview route in packages/tinacms/src/admin/index.tsx can turn an attacker-controlled hash-router splat into an off-origin iframe URL through packages/@tinacms/app/src/preview.tsx, while packages/@tinacms/app/src/lib/preview-origin.ts derives expectedOrigin from that same URL for the GraphQL message channel in packages/@tinacms/app/src/lib/graphql-reducer.ts. An unauthenticated attacker can send a crafted link to a signed-in editor, cause the admin to frame an attacker origin, and have that frame treated as the trusted preview. The attacker-controlled frame can submit GraphQL reads or mutations that the admin executes with the editor credentials, exposing or modifying protected content. This issue is fixed in tinacms 3.14.0 and @tinacms/app 2.5.14.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N","score":9.3,"severity":null}],"references":["https://github.com/tinacms/tinacms/security/advisories/GHSA-x34j-47hf-4xg7","https://github.com/tinacms/tinacms/pull/7522","https://github.com/tinacms/tinacms/commit/b57dbf4b56201aef15cd92caa49fd12ab96bbecf","https://github.com/tinacms/tinacms/releases/tag/@tinacms/app@2.5.14","https://github.com/tinacms/tinacms/releases/tag/tinacms@3.14.0"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-95990","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Oct 9, 2026, 8:43:37 PM","dateUpdated":"Oct 13, 2026, 11:24:15 AM"},"relatedAdvisories":[],"note":"EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON."},"key":"euvd:EUVD-2026-95990","identifiers":["EUVD-2026-95990","CVE-2026-108261","GHSA-x34j-47hf-4xg7"]},"retained":false,"historicalAffected":[]}],"coverage":[]}