CVE-2026-28791

Path Traversal in Media Upload Handle in Tina

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

tinacms

CVSS v3.1 NVD

7.4 HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H

EPSS

0.46% chance of exploitation in the next 30 days, 39th percentile

Published

2026-03-12

Updated

2026-03-13

Proof-of-concept exploits (1)

• advisories/GHSA-5hxf-c7j4-279c

Security advisories

• tinacms/tinacms/security/advisories/GHSA-5hxf-c7j4-279c

References

• CVE Record
• NVD entry