What’s Vulnerable › Vulnerabilities

CVE-2026-34604: @tinacms/graphql's `FilesystemBridge` Path Validation Can Be Bypassed via Symlinks or Junctions

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-04-01 · updated 2026-06-17
• Weakness: CWE-22

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.

Affected products

• @tinacms graphql: through 2.2.1

References

• https://github.com/tinacms/tinacms/commit/f124eabaca10dac9a4d765c9e4135813c4830955
• https://github.com/tinacms/tinacms/security/advisories/GHSA-g9c2-gf25-3x67
• https://github.com/tinacms/tinacms/security/advisories/GHSA-g9c2-gf25-3x67

Get alerted when CVE-2026-34604 or the next vulnerability affects your stack