CVE-2026-34603

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.

Score

CVSS 3.1 8.3 High

Status

Analyzed - security-advisories@github.com

Published

2026-04-01

Last modified

2026-04-01

Weaknesses

CWE-22, CWE-59

Affected products

• Tinacms/cli (Ssw)
• Tinacms (Tinacms)

References

• https://github.com/tinacms/tinacms/commit/f124eabaca10dac9a4d765c9e4135813c4830955
• https://github.com/tinacms/tinacms/security/advisories/GHSA-g87c-r2jp-293w