CVE-2026-34604 @tinacms/graphql's `FilesystemBridge` Path Validation Can Be Bypassed via Symlinks or Junctions
Attackers can bypass path validation via symlinks to read, modify, or delete files outside the intended content root in TinaCMS.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-34604?
CVE-2026-34604 is a high-severity path traversal vulnerability in tinacms, published on 1 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Tina is a headless content management system. Prior to version 2.2.2, @tinacms/graphql uses string-based path containment checks in FilesystemBridge. That blocks plain ../ traversal, but it does not resolve symlink or junction targets. If a symlink/junction already exists under the allowed content root, a path like content/posts/pivot/owned.md is still considered "inside" the base even though the real filesystem target can be outside it. As a result, FilesystemBridge.get(), put(), delete(), and glob() can operate on files outside the intended root. This issue has been patched in version 2.2.2.
Which versions are affected by CVE-2026-34604?
2 open source packages ship an affected version, including @tinacms/graphql. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
@tinacms/graphql npm | All versions | 2.2.2 |
@tinacms/graphql npm | All versions | 2.2.2 |
Products include Ssw Tinacms\/Graphql.
How do I fix CVE-2026-34604?
Upgrade @tinacms/graphql to 2.2.2 or later.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-34604 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-34604 exists.
Other vulnerabilities in tinacms
Sources
Also known as GHSA-g9c2-gf25-3x67.