CVE-2026-34603 @tinacms/graphql's Media Endpoints Can Escape the Media Root via Symlinks or Junctions
HighCVSS 8.3
EPSS 0.42%
- Published
- Updated
- Exploit status
- No public exploit known
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.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| tinacms | = < 2.2.2 | No fix listed |
| tinacms graphql(npm) | <= 2.2.1 | No fix listed |
| ssw tinacmscli | <= 2.2.1 | No fix listed |
References
- https://github.com/tinacms/tinacms/security/advisories/GHSA-g87c-r2jp-293w exploit vendor-advisory
- https://github.com/tinacms/tinacms/commit/f124eabaca10dac9a4d765c9e4135813c4830955 patch
- nvd.nist.gov third-party-advisory
- github.com