CVE-2026-108261
criticalTina is a headless content management system.
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/tinacms/tinacms/commit/b57dbf4b56201aef15cd92caa49fd12ab96bbecf security-advisories@github.com
- https://github.com/tinacms/tinacms/pull/7522 security-advisories@github.com
- https://github.com/tinacms/tinacms/releases/tag/@tinacms/app@2.5.14 security-advisories@github.com
- https://github.com/tinacms/tinacms/releases/tag/tinacms@3.14.0 security-advisories@github.com
- https://github.com/tinacms/tinacms/security/advisories/GHSA-x34j-47hf-4xg7 security-advisories@github.com
- https://github.com/tinacms/tinacms/security/advisories/GHSA-x34j-47hf-4xg7 134c704f-9b21-4f2e-91b3-4a467353bcc0