CVE-2026-34603: Ssw Tinacms/cli

High severity, CVSS 8.3. EPSS: 0.5% chance of exploitation in the next 30 days.

Tina is a headless content management system. Prior to version 2.2.2, @tinacms/cli recently added lexical path-traversal checks to the dev media routes, but the implementation still validates only the path string and does not resolve symlink or junction targets. If a link already exists under the media root, Tina accepts a path like pivot/written-from-media.txt as "inside" the media directory and then performs real filesystem operations through that link target. This allows out-of-root media listing and write access, and the same root cause also affects delete. This issue has been patched in version 2.2.2.

Affected products

• Ssw Tinacms/cli: up to and including 2.2.1

Published 2026-04-01. Last modified 2026-06-17.