Path Traversal in Ssw Tinacms\/cli
CVE-2026-28791
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.
Vulnerability class: Path Traversal (Directory Traversal)
EPSS: 0.003 (24.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.4 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H.
Affected products
- Ssw Tinacms\/cli
- Tinacms — versions < 2.1.7
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-28791?
- CVE-2026-28791 is a high-severity vulnerability in Ssw Tinacms\/cli, classified under Path Traversal. CVSS score: 7.4/10. Published 2026-03-12.
- How severe is CVE-2026-28791?
- High severity. CVSS v3 base score is 7.4 out of 10.