Vulnerability Description
Tina is a headless content management system. Prior to 2.1.8, the TinaCMS CLI development server exposes media endpoints that are vulnerable to path traversal, allowing attackers to read and write arbitrary files on the filesystem outside the intended media directory. When running tinacms dev, the CLI starts a local HTTP server (default port 4001) exposing endpoints such as /media/list/*, /media/upload/*, and /media/*. These endpoints process user-controlled path segments using decodeURI() and path.join() without validating that the resolved path remains within the configured media directory. This vulnerability is fixed in 2.1.8.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ssw | Tinacms\/Cli | < 2.1.8 |
Related Weaknesses (CWE)
References
- https://github.com/tinacms/tinacms/security/advisories/GHSA-2f24-mg4x-534qExploitVendor Advisory
- https://github.com/tinacms/tinacms/security/advisories/GHSA-2f24-mg4x-534qExploitVendor Advisory
FAQ
What is CVE-2026-28793?
CVE-2026-28793 is a vulnerability with a CVSS score of 8.4 (HIGH). Tina is a headless content management system. Prior to 2.1.8, the TinaCMS CLI development server exposes media endpoints that are vulnerable to path traversal, allowing attackers to read and write arb...
How severe is CVE-2026-28793?
CVE-2026-28793 has been rated HIGH with a CVSS base score of 8.4/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-28793?
Check the references section above for vendor advisories and patch information. Affected products include: Ssw Tinacms\/Cli.