CVE-2026-28791: Ssw Tinacms/cli

High severity, CVSS 7.4. EPSS: 0.5% chance of exploitation in the next 30 days.

Tina is a headless content management system. Prior to 2.1.7, a path traversal vulnerability exists in the TinaCMS development server's media upload handler. The code at media.ts joins user-controlled path segments using path.join() without validating that the resulting path stays within the intended media directory. This allows writing files to arbitrary locations on the filesystem. This vulnerability is fixed in 2.1.7.

Affected products

• Ssw Tinacms/cli: before 2.1.7 (fixed in 2.1.7)

Published 2026-03-12. Last modified 2026-06-17.