Vulnerability Description
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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ssw | Tinacms\/Cli | <= 2.2.1 |
Related Weaknesses (CWE)
References
- https://github.com/tinacms/tinacms/commit/f124eabaca10dac9a4d765c9e4135813c48309Patch
- https://github.com/tinacms/tinacms/security/advisories/GHSA-g87c-r2jp-293wVendor Advisory
- https://github.com/tinacms/tinacms/security/advisories/GHSA-g87c-r2jp-293wVendor Advisory
FAQ
What is CVE-2026-34603?
CVE-2026-34603 is a vulnerability with a CVSS score of 7.1 (HIGH). 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...
How severe is CVE-2026-34603?
CVE-2026-34603 has been rated HIGH with a CVSS base score of 7.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-34603?
Check the references section above for vendor advisories and patch information. Affected products include: Ssw Tinacms\/Cli.